…tification (#11913)

**Description:**

This PR includes the addition of a UUID in the stalled read request logs to provide a unique identifier for the requests.

**Bug:**

https://b.corp.google.com/issues/406689365

**Sample Log:**
```2025/03/24 20:58:17.714113 [4c38ecf7-bbb1-4ad1-9bdd-bac2d3946a8e] stalled read-req cancelled after 3.278211s
2025/03/24 20:58:17.831812 [e9bc86be-3a33-42b8-873c-ae78305d5459] stalled read-req cancelled after 3.278211s
2025/03/24 20:58:17.839987 [7345105f-6d10-4c77-9aa8-a6b6ddc05263] stalled read-req cancelled after 3.278211s

Writer.Flush was panicking due to blocking content sniffing logic if Writer.Flush was called before 512 bytes.

Re-ordering calls here allows Flush to signal EOF and unblock the content sniffer if a flush happens that early.

Add a test with multiple small Flushes to validate that this works as expected.

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 743120609

Source-Link: https://togithub.com/googleapis/googleapis/commit/13c865480b40c6cecd1087b37d860c4f239b1b30

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/b93d7b19b81e927954dec448b6987a505455ab28
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BEGIN_NESTED_COMMIT
feat(dataplex): Add Data Discovery result statistics
feat(dataplex): Add EntryLinkEvent for logs

PiperOrigin-RevId: 743067731

Source-Link: https://togithub.com/googleapis/googleapis/commit/f2b8c48977996c1de45535e1dd4332a233e26177

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/6d1b97ebb3d64d22cbc7402780e0bacc8273e832
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END_NESTED_COMMIT
BEGIN_NESTED_COMMIT
feat(deploy): Add resource definition for Revision
docs(deploy): Typos fixes and small improvements

PiperOrigin-RevId: 742835092

Source-Link: https://togithub.com/googleapis/googleapis/commit/453b0cc093f83796765503ead7ec9f5f8196125f

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/b53fe84132d214af678fc3fa6a3a15baf8845728
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END_NESTED_COMMIT
BEGIN_NESTED_COMMIT
docs(iam): minor doc update for ListPrincipalAccessBoundaryPoliciesResponse

PiperOrigin-RevId: 742751815

Source-Link: https://togithub.com/googleapis/googleapis/commit/84b5682a22054ab39f6bd128a7683085cbbf8284

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/27028de0638f9049e003c1ebf15a0b2fd4f8c2e7
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END_NESTED_COMMIT
BEGIN_NESTED_COMMIT
docs(iam): minor doc update for ListPrincipalAccessBoundaryPoliciesResponse

PiperOrigin-RevId: 742750483

Source-Link: https://togithub.com/googleapis/googleapis/commit/3fed537d8ba325981c3c41362e4cc44bd865f594

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/e5dbc6570a850ccb6e6b5cdd7a63c70ba22a60a8
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END_NESTED_COMMIT
BEGIN_NESTED_COMMIT
feat(artifactregistry): add the GoModule and KfpArtifact resources
docs(artifactregistry): remove the restriction of the maximum numbers of versions that can be deleted in one BatchDeleteVersions call

PiperOrigin-RevId: 742735969

Source-Link: https://togithub.com/googleapis/googleapis/commit/fec747a9a7ec48fcc01f6a5d4f4236ceb23e5bbb

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/82b6718201ce7df6bd308931c383eef0b54beee7
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END_NESTED_COMMIT
BEGIN_NESTED_COMMIT
feat(firestore/apiv1): add the UserCreds API

PiperOrigin-RevId: 742708704

Source-Link: https://togithub.com/googleapis/googleapis/commit/35980b69879ecc9d0db6343311ef2fa03976ee99

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/23742c6deecc81de0525d2ee7980e258e43fee5b
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END_NESTED_COMMIT

New client(s) generated in https://togithub.com/googleapis/google-cloud-go/commit/20f762c528726a3f038d3e1f37e8a4952118badf, triggering release.

Looks like we missed wrapping a couple of these errors.

… in MRD (#11688)

* feat(storage): add a new function to determine state of mrd

* change method name and output error + add a bit of testing

* change func name

---------

Co-authored-by: Chris Cotter 
Co-authored-by: BrennaEpp 

Allow callers to close an upload to an appendable object without finalizing it.

This test still works locally but it's blocked from running in kokoro for now.

Updates #11956

* feat(pubsub): add support for message transforms

* add transforms tests for topics and subscriptions

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>