Fix setting in-app-includes from external properties.

[maciejwalkowiak]

📜 Description

Fix setting in-app-includes from external properties.

💡 Motivation and Context

https://github.com/getsentry/sentry-java/pull/1282/files#r580247477

💚 How did you test it?

Unit tests.

📝 Checklist

• I reviewed the submitted code
• I added tests to verify the changes
• I updated the docs if needed
• No breaking changes

[codecov-io]

Codecov Report

Merging #1291 (e2b7b2e) into main (8324e22) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main    #1291      +/-   ##
============================================
+ Coverage     75.64%   75.65%   +0.01%     
- Complexity     1784     1785       +1     
============================================
  Files           183      183              
  Lines          6199     6207       +8     
  Branches        620      622       +2     
============================================
+ Hits           4689     4696       +7     
  Misses         1231     1231              
- Partials        279      280       +1     

Impacted Files	Coverage Δ	Complexity Δ
sentry/src/main/java/io/sentry/SentryOptions.java	85.66% <100.00%> (+0.39%)	124.00 <0.00> (+2.00)
...src/main/java/io/sentry/transport/RateLimiter.java	77.35% <0.00%> (-0.95%)	27.00% <0.00%> (-1.00%)

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[marandaneto]

LGTM