Azure: Translate not-found errors in ADLSInputStream mid-stream reads

[thswlsqls]

Closes #17062

Summary

• ADLSInputStream.read()/read(byte[], int, int) propagated the raw IOException from stream.read(...) when the file was deleted after the stream opened, instead of translating it to NotFoundException.
• openRange() in the same class already does this translation; this change makes read()/read(byte[], int, int) consistent with it, and with GCSInputStream's GCSExceptionUtil.throwNotFoundIfNotPresent pattern.
• Follow-up to issue Inconsistent handling of non-existent object locations across FileIO implementations #13528 (fixed by PR ADLS: Throw NotFoundException for inexistent input file #15806/GCS: Throw NotFoundException for inexistent input GCS file #15734), which covered openRange/readFully/readTail but missed the mid-stream read methods.
• azure is outside the REVAPI-checked module set and ADLSInputStream is package-private, so no API compatibility impact.

Testing done

• Added TestADLSInputStream#readTranslatesNotFoundOnMidStreamRead and #readBufferTranslatesNotFoundOnMidStreamRead, covering read() and read(byte[], int, int) throwing NotFoundException when the mocked stream raises an IOException wrapping a BlobStorageException with x-ms-error-code: BlobNotFound.
• ./gradlew :iceberg-azure:test --tests "org.apache.iceberg.azure.adlsv2.TestADLSInputStream" — 6 tests passed.
• ./gradlew :iceberg-azure:spotlessCheck :iceberg-azure:checkstyleMain :iceberg-azure:checkstyleTest — passed. (:iceberg-azure:check also runs integrationTest, which requires Docker/Azurite and was not available in this environment, so unit test/style/checkstyle were verified separately as shown above.)
• revapi: not applicable (azure module is outside REVAPI scope).