Prevent type error while converting invalid value type in convertToDatabaseValue()

[simPod]

Description

We cannot call method_exists() with anything else than string|object

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

PR checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING.md document.
• I have added tests to cover my changes.

[codecov]

Codecov Report

Merging #170 (c10eb51) into main (135fadb) will not change coverage.
The diff coverage is 100.00%.

❗ Current head c10eb51 differs from pull request most recent head 79a9147. Consider uploading reports for the commit 79a9147 to get more accurate results

@@             Coverage Diff             @@
##                main      #170   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
- Complexity        57        60    +3     
===========================================
  Files              5         5           
  Lines            110       110           
===========================================
  Hits             110       110           

Impacted Files	Coverage Δ
src/UuidBinaryOrderedTimeType.php	100.00% <100.00%> (ø)
src/UuidBinaryType.php	100.00% <100.00%> (ø)
src/UuidType.php	100.00% <100.00%> (ø)

[ramsey]

PHP 5.4 and 5.5 don't like use function. 😄

[simPod]

@ramsey I see, removed

[ramsey]

Thank you for contributing! 🎉