Calendar: The Calendar should block unnecessary or invalid characters.

Describe the bug

Calendar: The Calendar should block unnecessary or invalid characters. Screenshot attached.

Reproducer

No response

System Information

System:
    OS: Windows 11 10.0.26100
    CPU: (8) x64 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz
    Memory: 929.05 MB / 15.41 GB
  Binaries:
    Node: 22.21.1 - C:\Program Files\nodejs\node.EXE
    npm: 10.9.4 - C:\Program Files\nodejs\npm.CMD
    pnpm: 10.15.0 - C:\Users\AkshayAntony\AppData\Roaming\npm\pnpm.CMD    
  Browsers:
    Chrome: 144.0.7559.133
    Edge: Chromium (140.0.3485.54)
    Firefox: 147.0.1 - C:\Program Files\Mozilla Firefox\firefox.exe       
    Internet Explorer: 11.0.26100.1882
  npmPackages:
    react: 18.3.1 => 18.3.1

Steps to reproduce the behavior

1. Go to https://primereact.org/calendar/#basic
2. Try choosing a date.
3. Try updating the input box with unnecessary characters as shown in screenshot.
4. The input box accepts the characters.

Expected behavior

The input box in Calendar component shouldn't accept unnecessary characters.
Should Intercept letters and other invalid characters before they're inserted.

Start at the Calendar basic demo linked in the issue and reproduce the input behavior using the attached screenshot as reference. Verify which characters are accepted, then confirm that letters and other invalid characters are blocked before insertion; the issue is done when the Calendar input rejects those characters without disrupting valid date entry.