Fixes #68045

Fixes #67933

Fixes #67933

Fixes #67438

Fixes #67776

Fixes #67439
Fixes #67359
Fixes #67364

- addCsiHandler/addOscHandler custom sequence hooks
- Reflow final
- OSC_STRING optimization
- Draw to middle instead of top
- NPE/sanity checks in DOM renderer underline
- Remove jsarray buffer
- Doc typos
- Don't print keys that print more than a single character

Fixes #66158

fixes #64849

Fixes #65949

The module version 3.10.0-beta9-reflow is based on the branch
vscode-release/1.31-reflow which is forked from the normal
vscode-release/1.31 as reflow is still in PR and could change. This
will make managing the branch and reverting it if needed much easier.

Fixes #23688

Fixes #65436

Fixes #65710

Fixes #65702

Fixes #65485

- Remove AUTHORS file
- Support lineHeight in demo
- Remove jsdoc dependency
- Layering refactors
- Buffer optimizations
- Whitespace/null cell differentiation
- Parser OSC string optimization
- Add missing break to setOption code
- Fix mouse coords when position: fixed is used
- Fix addon typings error
- Dispose atlas when no terminals use it
- Find as you type/incremental searching (+ line cache)

Fixes #65318

Picks up fix for https://github.com/Microsoft/ApplicationInsights-node.js/issues/433 which is blocking strict null check work on a few files