## Summary of the Pull Request
The bug was that Narrator would still read the content of the old tab/pane although a new tab/pane was introduced. This is caused by the automation peer not being created when XAML requests it. Normally, we would prevent the automation peer from being created if the terminal was not fully initialized.
This change allows the automation peer to be created regardless of the terminal being fully initialized by...
- `TermControl`: `_InitializeTerminal` updates the padding (dependent on the `SwapChainPanel`) upon full initialization
- `ControlCore`: initialize the `_renderer` in the ctor so that we can attach the UIA Engine before `ControlCore::Initialize()` is called (dependent on `SwapChainPanel` loading)
As a bonus, this also fixes a locking issue where logging would attempt to get the text range's text and lock twice. The locking fix is very similar to #10937.
## PR Checklist
Closes [MSFT 33353327](https://microsoft.visualstudio.com/OS/_workitems/edit/33353327)
## Validation Steps Performed
- New pane from key binding is announced by Narrator
- New tab from key binding is announced by Narrator
638c6d0291