Support emoji in workspace names

[vabs]

Summary

Workspace rename currently fails in common emoji-entry flows. When users open the macOS emoji picker (Ctrl+Cmd+Space) while renaming a workspace, the field can lose focus and the edit gets canceled instead of saved.

This change allows workspace renames to commit on focus loss (while still cancelling on explicit cancel movement), so emoji characters can be inserted and persisted reliably.

Root Cause

Workspace inline rename logic only committed when editing ended with NSReturnTextMovement.
Any other end-editing movement was treated as cancel, which includes focus changes that happen during emoji picker interactions.

Changes

• Added a configurable commitsOnFocusLoss behavior to /Users/vaibhavsomani/Desktop/Projects/personal/arcmark/Sources/ArcmarkCore/Components/Base/InlineEditableTextField.swift.
• Enabled commitsOnFocusLoss for workspace rows in /Users/vaibhavsomani/Desktop/Projects/personal/arcmark/Sources/ArcmarkCore/WorkspaceRowView.swift.
• Updated workspace switcher inline rename commit logic in /Users/vaibhavsomani/Desktop/Projects/personal/arcmark/Sources/ArcmarkCore/WorkspaceSwitcherView.swift to commit on non-cancel focus-loss events.

User Impact

• Users can now add emoji to workspace names without losing edits.
• Existing cancel behavior is preserved for explicit cancel movement.
• Empty/whitespace-only names still do not commit.

Validation

• swift build -c release
• ./scripts/run.sh
• ./scripts/verify-build.sh .build/bundler/Arcmark.app
• Runtime check: osascript -e 'application "Arcmark" is running' returned true

[vabs]

@claude review this