Timezone parsing accepts invalid values

[number492]

Issue Description

This is accepted as a valid timezone expression, and should not be: +03:00.34

Note that this is a regression, and this PR would fix it: #1165

System Info

• 🖥 OS name and version: Ubuntu 25.10
• 🐍 Python version: Python 3.13.7
• 🏹 Arrow version: 1.4.0

[AbhisumatK]

working to fix this....

[AbhisumatK]

#1295

Fixed the Timezone Parsing Regression