sadpandajoe opened a new pull request, #35993:
URL: https://github.com/apache/superset/pull/35993

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   fix(dashboard): load charts correctly
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   ### SUMMARY
   <!--- Describe the change below, including rationale and design decisions -->
   
   Fixes flaky test failures and "Can't perform state update on unmounted 
component" warnings in `DatasourceControl.test.tsx` by addressing async race 
conditions, missing API mocks, and improper test cleanup.
   
     **Root causes fixed:**
     1. **Unawaited userEvent calls** - 30+ `userEvent` interactions were not 
awaited, causing tests to end while React was still processing state updates
     2. **Missing database API mock** - `DatasourceEditor` fetches 
`/api/v1/database/?q=*` on mount but the endpoint wasn't mocked, leaving 
background requests dangling
     3. **Incomplete test cleanup** - Module-level spy and global mutations 
(window.location) were never cleaned up between tests
     4. **Custom type drift** - Bespoke `TestDataset` type duplicated dataset 
shape, risking drift from the canonical `DatasetObject`
     5. **Spy lifecycle bug** - Using `jest.restoreAllMocks()` killed the 
module-level spy after the first test, causing subsequent tests to potentially 
make real HTTP calls
   
     **Related work:**
     - Follow up to https://github.com/apache/superset/pull/35810 to 
`fix-datasource-editor-async` branch which fixes the `DatasourceEditor` 
component tests
     - This PR fixes `DatasourceControl` component tests
     - No conflicts between branches (different test files)
   
   
   ### BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF
   <!--- Skip this if not applicable -->
   
   ### TESTING INSTRUCTIONS
   <!--- Required! What steps can be taken to manually verify the changes? -->
   
   ### ADDITIONAL INFORMATION
   <!--- Check any relevant boxes with "x" -->
   <!--- HINT: Include "Fixes #nnn" if you are fixing an existing issue -->
   - [ ] Has associated issue:
   - [ ] Required feature flags:
   - [ ] Changes UI
   - [ ] Includes DB Migration (follow approval process in 
[SIP-59](https://github.com/apache/superset/issues/13351))
     - [ ] Migration is atomic, supports rollback & is backwards-compatible
     - [ ] Confirm DB migration upgrade and downgrade tested
     - [ ] Runtime estimates and downtime expectations provided
   - [ ] Introduces new feature or API
   - [ ] Removes existing feature or API
   


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