feat(data_collector): add JP (TSE Prime domestic stocks) support to Yahoo collector (1d)

[kei-yamazaki]

Description

This PR adds JP support to Yahoo data collector for daily frequency (1d) with TSE Prime domestic stocks.
It introduces JP symbol loading from JPX, JP collector/normalizer classes, and explicit non-support errors for JP 1min.
It also updates related documentation and adds JP-focused tests.

Motivation and Context

JP was not supported in the Yahoo collector flow for daily data collection/normalization.
This change enables an official JP path and makes unsupported JP 1min behavior explicit.
Related issue: N/A

How Has This Been Tested?

• Pass the test by running: pytest qlib/tests/test_all_pipeline.py under upper directory of qlib.
• If you are adding a new feature, test on your own test scripts.

Executed tests (concise):

• python -m pytest -q tests/test_yahoo_collector_jp.py (7 passed)
• JP E2E (small scope with limit_nums=1):
  • download_data --region JP --interval 1d ✅
  • normalize_data --region JP --interval 1d ✅
  • normalize_data_1d_extend --region JP --interval 1d ✅
  • update_data_to_bin --region JP --interval 1d --limit_nums 1 ✅
  • --region JP --interval 1min returns expected ValueError ✅
• Regression sanity:
  • normalize_data --region CN --interval 1d ✅
  • normalize_data --region US --interval 1d ✅
  • normalize_data --region BR --interval 1d ✅

Screenshots of Test Results (if appropriate):

1. Pipeline test:
   Not run for this PR.
2. Your own tests:
   CLI outputs were verified for the commands listed above.

Types of changes

• Fix bugs
• Add new feature
• Update documentation