[ButtonBase] Ensure that onClick propagates when non-native button is clicked

[silviuaavram]

• I have followed (at least) the PR section of the contributing guide.

It's essentially the fix from #30145 by @ kmurgic but with some changes:

• use currentTarget instead of ref since ref might be null theoretically.
• do not check if there's onClick passed when calling the click event on the button
• unit tests
• possibly rebase/merge headache

Fixes #30144

[mui-bot]

Netlify deploy preview

• docs/data/material/migration/upgrade-to-v9/upgrade-to-v9.md

Bundle size report

Bundle	Parsed size	Gzip size
@mui/material	🔺+32B(+0.01%)	🔺+3B(0.00%)
@mui/lab	0B(0.00%)	0B(0.00%)
@mui/system	0B(0.00%)	0B(0.00%)
@mui/utils	0B(0.00%)	0B(0.00%)

Details of bundle changes

Generated by 🚫 dangerJS against ffc9ed5

[Copilot]

Pull request overview

This PR fixes onClick event propagation for non-native ButtonBase components when activated via keyboard (Enter/Space keys). Previously, keyboard-triggered clicks on non-native buttons (e.g., component="div") would directly call the onClick handler without generating a proper click event, preventing the event from bubbling to parent elements.

Changes:

• Replaced direct onClick invocations with event.currentTarget.click() to generate proper click events that bubble
• Removed onClick existence checks to allow event propagation even when ButtonBase itself has no onClick handler
• Added comprehensive tests verifying click event propagation to parent elements for both Enter and Space key activation

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
packages/mui-material/src/ButtonBase/ButtonBase.js	Modified keyboard event handlers (Enter and Space) to call .click() instead of directly invoking onClick, enabling proper event bubbling for non-native buttons
packages/mui-material/src/ButtonBase/ButtonBase.test.js	Added two new tests verifying that click events propagate to parent elements when Enter or Space keys are pressed on non-native buttons

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[siriwatknp]

👍 small typo in the upgrading guide.