Improve column selection by setting origin to clicked position

es6 aftermath, static property of type X are created before decorating type X and therefore failing the instanceof-check

In conjunction with setting `editor.multiCursorModifier` to `ctrlCmd`, this yields a much more natural `alt+click` experience. The goofier `shift+alt+click` that is the default uses the _prior_ cursor position as the start point of the column selection.

Autocomplete/validation `args` for keybindings.json

Changed keybinding to select current line -issue 59003

Improves flipped cursor on line numbers

Give hover popups focus only when accessibility support is enabled

This has been renamed to `javascript.suggest.completeJSDocs` and `typescript.suggest.completeJSDocs`

Fixes #68029

Use the `typescript.preferences.renameShorthandProperties` and `javascript.preferences.renameShorthandProperties` to disable shorthand property renames. Default to enabling renames

Fixes #68425

Fixes #68335

Not clear why files under gc-signals source are being checking

Strict null work

Supress access to arrays that we know are set earlier in the code