[NPU] Set MAX_TILES Read Only (#34768)
### Details:
- Set MAX_TILES property as Read Only
- NPU Plugin initializes it from driver
### Tickets:
- CVS-182576
### AI Assistance:
- *AI assistance used: no / yes*
- *If yes, summarize how AI was used and what human validation was
performed (build/tests/manual checks).*
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Signed-off-by: Sorin Butnariu <sorin.butnariu@intel.com>
