fix: lsp-embedded-language-serviceadd add activationEvents to invoke client

[moushicheng]

What Happen?

it's seem that vscode high version can't work in lsp-embedded-language-service

Why Happen?

i find some clues in official document

Note: If your extension is compatible with VS Code versions prior to 1.74.0, you must declare onLanguage:plaintext in the activationEvents field of /package.json to tell VS Code to activate the extension as soon as a plain text file is opened (for example a file with the extension .txt):

beacuse lack of activationEvents, it is origin activationEvents config

	"activationEvents": [],

How to Fix?

	"activationEvents": [
		"onLanguage:html1"
	],

Other

I've found that other people have the same problem

https://stackoverflow.com/questions/77038821/why-can-i-not-run-the-lsp-embedded-language-service-example-how-should-i-debug

[daKmoR]

just stumbled over this myself - this fixes it indeed 🤗

[apupier]

fixes #952