[Fix](profile) Remove additional timing after OLAP_SCAN_OPERATOR task completion

[zclllyybb]

What problem does this PR solve?

Issue Number: close #xxx

Related PR: #xxx

Problem Summary:

After all actual task was finished by this operator, the close time shouldn't be added into ExecTime. it may make weird profiles like :

   - Total: 36sec636ms
......
               OLAP_SCAN_OPERATOR (id=4. nereids_id=1858. ...
                  - ExecTime: avg 16sec665ms, max 59sec941ms, min 4sec926ms

Release note

None

Check List (For Author)

• Test

  • Regression test
  • Unit Test
  • Manual test (add detailed scripts or steps below)
  • No need to test or manual test. Explain why:
    • This is a refactor/code format and no logic has been changed.
    • Previous test can cover this change.
    • No code files have been changed.
    • Other reason

• Behavior changed:

  • No.
  • Yes.

• Does this need documentation?

  • No.
  • Yes.

Check List (For Reviewer who merge this PR)

• Confirm the release note
• Confirm test cases
• Confirm document
• Add branch pick label

[hello-stephen]

Thank you for your contribution to Apache Doris.
Don't know what should be done next? See How to process your PR.

Please clearly describe your PR:

1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
3. What features were added. Why was this function added?
4. Which code was refactored and why was this part of the code refactored?
5. Which functions were optimized and what is the difference before and after the optimization?

[zclllyybb]

run buildall

[doris-robot]

TPC-H: Total hot run time: 31968 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpch-tools
Tpch sf100 test result on commit 6396f254edf901167007d1dc5da0673f8daf8339, data reload: false

------ Round 1 ----------------------------------
q1	17640	5187	5055	5055
q2	2118	343	193	193
q3	10132	1336	734	734
q4	10198	792	324	324
q5	7508	2157	1863	1863
q6	201	186	157	157
q7	898	755	591	591
q8	9274	1417	1146	1146
q9	5270	4852	4815	4815
q10	6886	1975	1573	1573
q11	532	286	282	282
q12	346	381	229	229
q13	17821	4069	3245	3245
q14	242	252	222	222
q15	907	814	804	804
q16	671	677	627	627
q17	652	773	519	519
q18	6669	6518	6519	6518
q19	1276	989	657	657
q20	397	342	237	237
q21	2754	2151	1903	1903
q22	362	324	274	274
Total cold run time: 102754 ms
Total hot run time: 31968 ms

----- Round 2, with runtime_filter_mode=off -----
q1	5300	5249	5277	5249
q2	264	342	255	255
q3	2177	2693	2267	2267
q4	1398	1734	1301	1301
q5	4247	4156	4238	4156
q6	224	179	141	141
q7	2279	2112	1816	1816
q8	2646	2386	2391	2386
q9	7561	7619	7513	7513
q10	2866	3062	2576	2576
q11	524	468	454	454
q12	679	743	593	593
q13	3926	4397	3679	3679
q14	311	316	311	311
q15	886	836	813	813
q16	703	724	703	703
q17	1146	1391	1499	1391
q18	8238	7774	7702	7702
q19	919	884	941	884
q20	2315	2128	1989	1989
q21	4761	4187	4130	4130
q22	554	552	508	508
Total cold run time: 53924 ms
Total hot run time: 50817 ms

[doris-robot]

ClickBench: Total hot run time: 28.35 s

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/clickbench-tools
ClickBench test result on commit 6396f254edf901167007d1dc5da0673f8daf8339, data reload: false

query1	0.06	0.05	0.05
query2	0.10	0.04	0.04
query3	0.26	0.09	0.08
query4	1.61	0.12	0.11
query5	0.29	0.26	0.25
query6	1.20	0.68	0.67
query7	0.03	0.03	0.03
query8	0.05	0.04	0.04
query9	0.58	0.50	0.51
query10	0.56	0.55	0.55
query11	0.14	0.10	0.09
query12	0.14	0.11	0.10
query13	0.64	0.62	0.61
query14	1.08	1.05	1.06
query15	0.87	0.88	0.86
query16	0.39	0.42	0.40
query17	1.15	1.17	1.16
query18	0.22	0.20	0.20
query19	2.08	2.01	2.02
query20	0.02	0.02	0.01
query21	15.39	0.27	0.14
query22	5.38	0.06	0.04
query23	16.12	0.28	0.10
query24	1.92	0.26	0.31
query25	0.09	0.07	0.07
query26	0.15	0.13	0.13
query27	0.06	0.06	0.05
query28	3.21	1.17	0.97
query29	12.57	3.94	3.15
query30	0.27	0.13	0.13
query31	2.82	0.62	0.41
query32	3.23	0.58	0.50
query33	3.16	3.23	3.21
query34	16.33	5.39	4.77
query35	4.77	4.75	4.78
query36	0.66	0.49	0.48
query37	0.11	0.07	0.07
query38	0.07	0.04	0.04
query39	0.05	0.03	0.03
query40	0.19	0.16	0.15
query41	0.09	0.03	0.03
query42	0.04	0.03	0.02
query43	0.04	0.04	0.04
Total cold run time: 98.19 s
Total hot run time: 28.35 s

[doris-robot]

BE UT Coverage Report

Increment line coverage 🎉

Increment coverage report
Complete coverage report

Category	Coverage
Function Coverage	52.49% (19271/36716)
Line Coverage	35.96% (179009/497780)
Region Coverage	32.36% (138764/428826)
Branch Coverage	33.32% (60062/180271)

[hello-stephen]

BE Regression && UT Coverage Report

Increment line coverage 100% (0/0) 🎉

Increment coverage report
Complete coverage report

Category	Coverage
Function Coverage	71.52% (25739/35991)
Line Coverage	54.15% (268908/496603)
Region Coverage	51.64% (223734/433236)
Branch Coverage	53.07% (96059/181003)