fix(HTML Authoring): Disable pasting images

[hirokiterashima]

Changes

• Set TinyMCE's paste_data_images option to false to disallow authors from pasting images. This was creating images to be converted to base64 strings, which made the unit large.

Test

Try pasting images in:

• Display content authoring
• Student notebook report

[qltysh]

Coverage Impact

Unable to calculate total coverage change because base branch coverage was not found.

Modified Files with Diff Coverage (1)

Rating	File	% Diff	Uncovered Line #s
	...irectives/wise-tinymce-editor/wise-tinymce-editor.component.ts	0.0%	161
	Total	0.0%

🤖 Increase coverage with AI coding...

In the `tinymce-disable-pasting-images` branch, add test coverage for this new code:

- `src/assets/wise5/directives/wise-tinymce-editor/wise-tinymce-editor.component.ts` -- Line 161

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• Diff Coverage: Coverage for added or modified lines of code (excludes deleted files). Learn more.

• Total Coverage: Coverage for the whole repository, calculated as the sum of all File Coverage. Learn more.

• File Coverage: Covered Lines divided by Covered Lines plus Missed Lines. (Excludes non-executable lines including blank lines and comments.)

  • Indirect Changes: Changes to File Coverage for files that were not modified in this PR. Learn more.

[hirokiterashima]

🎉 This PR is included in version 5.232.1 🎉

The release is available on GitHub release

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