Code actions are not available in Zed

[rcjsuen]

dockerfile-language-server/src/server.ts

Lines 521 to 522 in 90dab55

	connection.onCodeAction((codeActionParams: CodeActionParams): Command[] | PromiseLike<CodeAction[]> => {
	if (applyEditSupport && codeActionParams.context.diagnostics.length > 0) {

Looks like we are a little over-aggressive here. Even if the client does not support workspace/applyEdit (which Zed does not), we can still just send code actions back with edit populated for the client to apply the edit locally.

[rcjsuen]

This alters the behaviour we initially implemented for #183 so the test that was added there will need to be updated accordingly. Looking at how things are now, we should have reviewed our implementations for textDocument/codeAction and textDocument/executeCommand when we made changes for #225.