Issues with Framework7 Templates

[huajiqaq]

Issue 1: Infinite Recursion in Core Non-Vite Environment

Only Core templates (when not using Vite) have findPageEl infinite recursion:

• CLI incorrectly configures index.html as a page route
• Causes Framework7 router to enter infinite loop during page lookup

Issue 2: Outdated Svelte Templates

Only Svelte templates have version compatibility issues:

• CLI still uses deprecated Svelte v3/v4 initialization syntax
• Not adapted to Svelte v5 new APIs and rune system
• Missing required mount() method calls

I have submitted a PR to fix these issues: #219