fix(types): type ComfyDialog and ComfyAsyncDialog properly

ComfyDialog:
- Type constructor buttons parameter as HTMLButtonElement[] | null
- Type show method parameter as string | HTMLElement | HTMLElement[]
- Use definite assignment for textElement

ComfyAsyncDialog:
- Make class generic with DialogAction<T> type
- Type resolve function, show/showModal return types
- Fix button creation with proper HTMLButtonElement cast
- Add generic static prompt method

ManageGroupDialog:
- Update show method signature to match base class
- Extract nodeType from parameter for string comparisons

src/scripts/ui/dialog.ts

@@ -4,11 +4,10 @@ export class ComfyDialog<
   T extends HTMLElement = HTMLElement
 > extends EventTarget {
   element: T
-  // @ts-expect-error fixme ts strict error
-  textElement: HTMLElement
+  textElement!: HTMLElement
   #buttons: HTMLButtonElement[] | null
 
-  constructor(type = 'div', buttons = null) {
+  constructor(type = 'div', buttons: HTMLButtonElement[] | null = null) {
     super()
     this.#buttons = buttons
     this.element = $el(type + '.comfy-modal', { parent: document.body }, [
@@ -35,8 +34,7 @@ export class ComfyDialog<
     this.element.style.display = 'none'
   }
 
-  // @ts-expect-error fixme ts strict error
-  show(html) {
+  show(html: string | HTMLElement | HTMLElement[]): void {
     if (typeof html === 'string') {
       this.textElement.innerHTML = html
     } else {