DOC-3243: Directionality buttons now always apply to blocks and only appear active when directionality is set

[kemister85]

Ticket: DOC-3243

Site: Staging

Changes:

• Added release note entry for TINY-13337 to modules/ROOT/pages/8.4.0-release-notes.adoc

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Pre-checks:

• Branch is correctly prefixed (release-note branch)
• modules/ROOT/nav.adoc has been updated (if applicable).
• Files have been included where required (if applicable).
• Files removed have been deleted, not just excluded from the build (if applicable).
• Files added for New product features include a release note entry.
• Major or minor version changes have updated the supported-versions.adoc table.
• Build passes without console errors, warnings, or issues.

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Review:

• Documentation Team Lead has reviewed.

[kemister85]

@MitchC1999 Consolidated both .yaml entries into one for this.

[MitchC1999]

Suggested change

	Previously, the directionality buttons only applied the directionality attribute or style to the current block when toggling to the opposite of the default directionality. Clicking the button for the default directionality had no effect, and the toolbar could show an active button even when the block itself had no explicit directionality set.
	In {productname} {release-version}, each directionality button always applies or removes the directionality attribute on the selected block, and only appears active when directionality is explicitly set on the block.
	Previously, the directionality buttons would not apply the directionality attribute or style when toggling to the default directionality. This could cause non-default directional content to appear in the opposite direction.
	In {productname} {release-version}, each directionality button always applies or removes the directionality attribute on the selected block, and only appears active when directionality is explicitly set on the block.