arrow

GH-36323: [Python] Fix Timestamp scalar repr error on values outside datetime range (#36942)



### Rationale for this change

https://github.com/apache/arrow/issues/36323

### What changes are included in this PR?

Changed the way repr is handled for TimestampScalar

### Are these changes tested?

I have added a very basic test for this change to see whether it will error or not if outside the range.

### Are there any user-facing changes?

The functionality of TimestampScalar's repr now uses the `strftime` function.

* Closes: #36323

Lead-authored-by: Ashish Bailkeri <ashishbailkeri123@gmail.com>
Co-authored-by: Ashish Bailkeri <47304318+aboss123@users.noreply.github.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>