build(deps): bump tinymce from 6.8.6 to 8.9.1 in /src/angular-material-shared-demo

[dependabot]

Bumps tinymce from 6.8.6 to 8.9.1.

Changelog

Sourced from tinymce's changelog.

8.9.1 - 2026-09-09

8.9.0 - 2026-08-27

Improved

• Sidebars can now be resized by dragging their edge, and their width can be configured with the new sidebar_width option. #TINYMCE-14527
• The Help dialog's Plugins tab now lists all active plugins, including custom plugins, using metadata provided by each plugin. #TINYMCE-14650
• The Help dialog's Plugins tab now lists plugins with invalid metadata as plain text. #TINYMCE-14730

Fixed

• Image with empty alt text would add role='presentation' instead of adding alt text when updated. #TINYMCE-13738
• Opening or closing sidebars from the toolbar no longer causes the editor to scroll to the cursor position. #TINYMCE-14765

8.8.2 - 2026-07-27

Fixed

• The caret could be positioned incorrectly in some cases when scrolling while a context toolbar was open. #TINYMCE-14415
• Formatting could not be applied to and removed from editable child elements when a noneditable element was selected. #TINYMCE-9142

8.8.1 - 2026-07-22

Fixed

• Applying or removing formatting on a multi-cell table selection incorrectly styled list items in cells that were not selected. #TINYMCE-13235
• The menubar could wrap over multiple rows on narrow viewports, such as at high browser zoom levels, leaving little or no visible space for the editable area. #TINYMCE-14233

8.8.0 - 2026-07-15

Improved

• Added the aria-valuenow, aria-valuemin, and aria-valuemax attributes to the editor resize handle when resizing vertically. #TINYMCE-14493

Fixed

• Opening table properties on a nested table could edit the wrong table. #TINYMCE-13767
• Clicking anchor links with special characters like semicolons in readonly mode or using the link plugin was throwing a querySelectorAll syntax error. #TINYMCE-8784
• Worked around an edge case of a Chromium bug where clicking on the right of an li could fail. #TINYMCE-14490

8.7.0 - 2026-07-01

Added

• Added editor.announce() for posting messages to screen readers via an aria-live region. #TINY-12791

Improved

• Removed 300 item limit on the emoticons dialog 'All' tab by optimising render performance. #TINY-7552
• Pressing Tab or Shift+Tab on an open menu now closes it and moves focus to the next or previous focusable element. #TINY-13341
• The editor resize handle now uses browser pointer events for more reliable behaviour across different integration environments. #TINY-14241

Fixed

• CSS custom property names and color values in the style attribute were being lowercased when parsed. #TINY-11524
• Focused links in dark mode had the same text color as the background. #TINY-14264
• Using the undo keyboard shortcut did not restore editor selection correctly. #TINY-14255

... (truncated)

Commits

• 874db41 TINYMCE-14741: Changelogs for 8.9.1 release (#1882)
• 7b2f8de TINYMCE-14775: More tests, less flaky tests, and the headless tests (#1795)
• 212a926 TINYMCE-14779: Bump versions for next release
• df61eb3 TINYMCE-14779: Batch changelog entries (#1822)
• ce3a820 TINYMCE-14779: Merge remote-tracking branch 'origin/release/8' into rc/8.9
• fac773c TINYMCE-14829: prevent sidebar resize handle from shrinking (#1817)
• ce92e6b TINYMCE-14765: Fix sidebar toggle scroll jumping when editor is unfocused (#1...
• 8edfe31 TINYMCE-14774: Updates for editor/
• 0b956c6 TINYMCE-14774: Updates for editor/
• 9c1ee77 TINYMCE-14682: Fix flaky tests and downgrade to Firefox 152 (#11235)
• Additional commits viewable in compare view

Maintainer changes

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