fix(HybridSaaSPool): create standby sites for all hybrid pool rules

[tanmoysrt]

• fix(HybridPool): check for specific app as per record instead of erpnext app
• fix(HybridPool): dont stop create pooling only one hybrid pool has been replenished

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 39.91%. Comparing base (45d65fc) to head (925e409). Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
press/press/doctype/site/saas_pool.py	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2261 +/- ## ======================================= Coverage 39.91% 39.91% ======================================= Files 371 371 Lines 28093 28093 ======================================= Hits 11212 11212 Misses 16881 16881 ```

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[tanmoysrt]

The failed tests are not related to this, so merged.