* test: add VariableNode test suite
* test: add ToolbarPlugin test suite
* test: add AutoLinkPlugin test suite
* test: add AddVariablesDropdown test suite
* test: add Editor test suite
* chore: Remove unnecessary comments in ToolbarPlugin.test.tsx
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Co-authored-by: Amit Sharma <74371312+Amit91848@users.noreply.github.com>