[8.x] 🌊 Streams - unskip test debug (#208150) (#208506)

# Backport

This will backport the following commits from `main` to `8.x`:
- [🌊 Streams - unskip test debug
(#208150)](#208150)

<!--- Backport version: 9.4.3 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Joe
Reuter","email":"johannes.reuter@elastic.co"},"sourceCommit":{"committedDate":"2025-01-28T10:32:10Z","message":"🌊
Streams - unskip test debug (#208150)\n\nFixes
https://github.com/elastic/kibana/issues/206482\nFixes
https://github.com/elastic/kibana/issues/206483\n\nI did some tests
running the flaky part in a loop and couldn't get it to\nfail once both
locally and on CI.\nI also reviewed the code and I can't tell how this
could be flaky. My\nguess is that something changed since we skipped
this test.\n\nBefore spending more time on it, let's try to unskip - if
it still\ncauses problems we can quickly skip
again.\n\n---------\n\nCo-authored-by: kibanamachine
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Streams - unskip test
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Streams - unskip test debug (#208150)\n\nFixes
https://github.com/elastic/kibana/issues/206482\nFixes
https://github.com/elastic/kibana/issues/206483\n\nI did some tests
running the flaky part in a loop and couldn't get it to\nfail once both
locally and on CI.\nI also reviewed the code and I can't tell how this
could be flaky. My\nguess is that something changed since we skipped
this test.\n\nBefore spending more time on it, let's try to unskip - if
it still\ncauses problems we can quickly skip
again.\n\n---------\n\nCo-authored-by: kibanamachine
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Streams - unskip test debug (#208150)\n\nFixes
https://github.com/elastic/kibana/issues/206482\nFixes
https://github.com/elastic/kibana/issues/206483\n\nI did some tests
running the flaky part in a loop and couldn't get it to\nfail once both
locally and on CI.\nI also reviewed the code and I can't tell how this
could be flaky. My\nguess is that something changed since we skipped
this test.\n\nBefore spending more time on it, let's try to unskip - if
it still\ncauses problems we can quickly skip
again.\n\n---------\n\nCo-authored-by: kibanamachine
<42973632+kibanamachine@users.noreply.github.com>","sha":"8bb48a44275a73187f8330bd2c3ad12e6c8edb61"}},{"branch":"8.x","label":"v8.18.0","branchLabelMappingKey":"^v8.18.0$","isSourceBranch":false,"state":"NOT_CREATED"}]}]
BACKPORT-->

Co-authored-by: Joe Reuter <johannes.reuter@elastic.co>

x-pack/solutions/observability/packages/utils_server/es/storage/index_adapter/integration_tests/index.test.ts

@@ -182,10 +182,9 @@ describe('StorageIndexAdapter', () => {
       await verifyClean();
     });
 
-    // FLAKY: https://github.com/elastic/kibana/issues/206482
-    // FLAKY: https://github.com/elastic/kibana/issues/206483
-    describe.skip('after rolling over the index manually and indexing the same document', () => {
+    describe('after rolling over the index manually and indexing the same document', () => {
       beforeAll(async () => {
+        await verifyClean();
         await client.index({ id: 'doc1', document: { foo: 'bar' } });
         await rolloverIndex();
         await client.index({ id: 'doc1', document: { foo: 'bar' } });