fix(agent): allow mysqli parameter binding in execute

[ZNeumann]

fixes instrumentation of mysqli when binding in execute. This feature was introduced in PHP 8.1 https://wiki.php.net/rfc/mysqli_bind_in_execute

[newrelic-php-agent-bot]

Test Suite	Status	Result
Multiverse	❌	6/18 passing
SOAK	✅	142/142 passing

[codecov-commenter]

Codecov Report

❌ Patch coverage is 92.30769% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 78.37%. Comparing base (d7bc3fb) to head (ffb80a1).
⚠️ Report is 6 commits behind head on dev.

Files with missing lines	Patch %	Lines
agent/php_explain_mysqli.c	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1172      +/-   ##
==========================================
+ Coverage   78.33%   78.37%   +0.04%     
==========================================
  Files         193      193              
  Lines       28250    28305      +55     
==========================================
+ Hits        22129    22185      +56     
+ Misses       6121     6120       -1     

Flag	Coverage Δ
agent-for-php-7.2	78.25% <76.92%> (?)
agent-for-php-7.3	78.27% <76.92%> (-0.01%)	⬇️
agent-for-php-7.4	78.15% <76.92%> (-0.01%)	⬇️
agent-for-php-8.0	77.68% <72.72%> (-0.01%)	⬇️
agent-for-php-8.1	77.93% <100.00%> (+0.02%)	⬆️
agent-for-php-8.2	77.55% <100.00%> (?)
agent-for-php-8.3	77.62% <100.00%> (+0.02%)	⬆️
agent-for-php-8.4	77.64% <100.00%> (+0.02%)	⬆️
agent-for-php-8.5	76.97% <100.00%> (+0.02%)	⬆️

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[zsistla]

Could you please add a test similar to this one: https://github.com/newrelic/newrelic-php-agent/blob/main/tests/integration/mysqli/test_bind_param_object_oo.php#L167
So we can verify no nefarious garbage collections?