fix: prevent memory exhausted issue when do query for all donations

[ravinderk]

Bug Report

User Story

As an admin, I do not want any functionality to break because of memory exhausted. In practical case when using Give_Payments_Query calculate total donations or number set to -1 then we will face this issue if the number of donation is > 6000 and memory_limit set to 256M

ref: https://core.trac.wordpress.org/ticket/14254

Current Behavior

We will get a fatal error if query all donations at once because long query generates to update the meta cache.

Expected Behavior

Functionality must not break due to the number of donation in the query.

Bug Type

• This bug describes functionality that once worked as expected in version X.X.X.
• This bug describes functionality that never worked as expected.
• I am not sure whether this functionality ever worked as expected.

Steps to Reproduce

1. create a site with > 6000 donation
2. Set memory limit to 256M
3. Export donations

Possible Solution

Do not update donation meta cache when query for -1 number of donations.

Acceptance Criteria

• We are able to export donations on large database without any issue.

[ravinderk]

https://www.loom.com/share/79942a73fe2f4c1eab5af39be1791c9e