Fix composite build: re-export KeyboardResultType, exclude tests, remove stray emits

- Export KeyboardResultType as value from Types (const enum)
- Exclude browser unit tests from composite build
- Drop test/benchmark from tsconfig.all (uses path imports to sources)
- Update TaskQueue import paths in browser and addon-webgl
- Remove accidental .js/.d.ts emit files from src/

Co-authored-by: Daniel Imms <Tyriar@users.noreply.github.com>

tsconfig.all.json

@@ -5,7 +5,6 @@
     { "path": "./demo" },
     { "path": "./src/browser" },
     { "path": "./src/headless" },
-    { "path": "./test/benchmark" },
     { "path": "./test/playwright" },
     { "path": "./addons/addon-attach" },
     { "path": "./addons/addon-clipboard" },