Enable the Enable max-len and max-lines eslint rules (#1842)

## Description:

Enable the Enable `max-len` and `max-lines` eslint rules.

Fixes #1785

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

src/client/FlagInputModal.ts

@@ -19,7 +19,10 @@ export class FlagInputModal extends LitElement {
     return html`
       <o-modal title="Flag Selector Modal" alwaysMaximized>
         <input
-          class="h-[2rem] border-none text-center border border-gray-300 rounded-xl shadow-sm text-2xl text-center focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-blue-500 text-black dark:border-gray-300/60 dark:bg-gray-700 dark:text-white"
+          class="h-[2rem] border-none text-center border border-gray-300
+          rounded-xl shadow-sm text-2xl text-center focus:outline-none
+          focus:ring-2 focus:ring-blue-500 focus:border-blue-500 text-black
+          dark:border-gray-300/60 dark:bg-gray-700 dark:text-white"
           type="text"
           placeholder="Search..."
           @change=${this.handleSearch}