Async flag lost when alias with type parameters (@alias Name<T> async fun) is used #3469

```---@alias MyAsyncFunc<T> async fun(): T

---@type MyAsyncFunc<string>
local function my_function()
	return "test"
end

my_function() -- on hover, it shows async

---@diagnostic enable: await-in-sync

local function async_context()
	my_function() -- raises `await-in-sync` warning since the outer function is not marked as async
end

---@alias Name<T> async fun(): T
---@alias Name2<T> async fun(a: T)
---@alias Name3<T> async fun(a: T): T

---@alias AsyncFuncT async fun(): any

---@alias AsyncGenericFuncT<T> async fun(): T

---@alias AnotherAsyncGenericFuncT<T> async fun(val: T)

---@alias DifferentAsyncFormat async fun<T>(val: T): T

---@class TestClass
---@field field AsyncFuncT
---@field generic_field AsyncGenericFuncT<string>
---@field another_generic AnotherAsyncGenericFuncT<integer>
---@field different DifferentAsyncFormat

---@type TestClass
local test_fields = {
	field = function() end, --- correctly marks async
	generic_field = function() -- the function is not tagged as async
		return "hello" -- the return type is correctly tagged as string
	end,
	another_generic = function(num) -- the function is not tagged as async
		print(num) -- the num is correctly tagged as integer
	end,
	different = function(x) -- correctly tags as async
		return x
	end,
}

---@type AsyncFuncT
local function test() end

test() -- correctly tags as async

---@type AsyncGenericFuncT<string>
local function test2()
	return "hello" -- correctly tags the return type as string
end

test2() -- does not tag as async

---@type AnotherAsyncGenericFuncT<integer>
local function test3(num)
	print(num) -- correctly tags as integer
end

test3(2) -- does not tag as async

---@type DifferentAsyncFormat
local function test4(x)
	return x
end

test4(20) -- correctly tags as async

local function non_async()
	test() -- if await-in-sync is enabled, this warns as expected
	-- since the function is not tagged async

	test2() -- gives no warning since its not tagged as async function
	test3(2) -- gives no warns since its not tagged as async function

	test4(4) -- warns as expected when await-in-sync is enabled
end

---@async
local function async_code()
	test() -- no warning as expected when await-in-sync is enabled
	test2()
	test3(2)
	test4(4) -- no warning as expected when await-in-sync is enabled
end

---@alias MyAsyncFunc<T> async fun(): T
---@alias MyAsyncFuncNormal async fun(): any

---@type MyAsyncFunc<string>
local function my_function()
	return "test"
end

---@type MyAsyncFuncNormal
local function working()
	return "test"
end

---@diagnostic enable: await-in-sync

local function async_context()
	my_function() -- should raise `await-in-sync` warning
	working() -- warns with `await-in-sync`
end