Fix remaining typescript issues, enable tsc (#32840)

Fixes 79 typescript errors. Discovered at least two bugs in
`notifications.ts`, and I'm pretty sure this feature was at least
partially broken and may still be, I don't really know how to test it.

After this, only like ~10 typescript errors remain in the codebase but
those are harder to solve.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

Makefile

@@ -377,12 +377,12 @@ lint-backend-fix: lint-go-fix lint-go-vet lint-editorconfig
 .PHONY: lint-js
 lint-js: node_modules
 	npx eslint --color --max-warnings=0 --ext js,ts,vue $(ESLINT_FILES)
-#	npx vue-tsc
+	npx vue-tsc
 
 .PHONY: lint-js-fix
 lint-js-fix: node_modules
 	npx eslint --color --max-warnings=0 --ext js,ts,vue $(ESLINT_FILES) --fix
-#	npx vue-tsc
+	npx vue-tsc
 
 .PHONY: lint-css
 lint-css: node_modules
@@ -451,10 +451,6 @@ lint-templates: .venv node_modules
 lint-yaml: .venv
 	@poetry run yamllint .
 
-.PHONY: tsc
-tsc:
-	npx vue-tsc
-
 .PHONY: watch
 watch:
 	@bash tools/watch.sh