fix(inline-tool-link): restore unlink behavior and add dynamic tooltip with keyboard Shortcut

[prathmeshyelne]

Problem

In v2.31.6, two regressions appeared in the Link Inline Tool:

1. Unlink button does not work — clicking the Link tool icon while the selection is inside an anchor does nothing. The anchor is never removed.
2. Cmd/Ctrl+K shortcut cannot remove links — pressing ⌘+K (Mac) or Ctrl+K (Win/Linux) while the selection is inside an existing link also fails to unlink.

Both were introduced by commit 9f942ca which added a !this.inputOpened guard around the unlink logic. Because checkState() always opens the link input when an anchor is detected, the guard was never satisfied, so unlink() was never called.

Solution

• Remove the !this.inputOpened guard in surround() so that clicking the Link tool or pressing Cmd/Ctrl+K while inside an anchor always unlinks, restoring the v2.29.1 behavior.
• Add dynamic tooltip via a new getTitle() method on LinkInlineTool:
  • When selection is inside a link → tooltip shows "Unlink"
  • Otherwise → tooltip shows "Link"
• Update the Inline Toolbar to read dynamic titles from tool instances so the popover hint reflects the current state.

Changes

File	Change
src/components/inline-tools/inline-tool-link.ts	Fix surround() to always unlink when parentAnchor exists; add getTitle(); update render() and checkState() to set dynamic button.title
src/components/modules/toolbar/inline.ts	Read instance.getTitle?.() after checkState() to populate the popover hint title

Acceptance criteria

• Existing links are detected correctly
• Cmd+K (Mac) toggles link creation and removal
• Ctrl+K (Windows/Linux) toggles link creation and removal
• Link dialog enters edit mode when a link is selected
• Unlink button is visible and functional
• Unlink removes the anchor tag while keeping text intact
• Tooltip shows "Unlink" when inside a link, "Link" otherwise

Fix Video :

Screen.Recording.2026-06-09.at.10.30.24.PM.mov

Closes #3005