[exporter/elasticsearch] Fix CloudID parsing to correctly handle Elastic Cloud IDs when sent with multiple dollar sign separators #44325
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Description
The CloudID decoder was incorrectly using
strings.Cut(), which only splits at the first delimiter, resulting in malformed URLs when the decoded CloudID contained multiple$separators. Changed to usestrings.Split()to match the reference implementation from the go-elasticsearch library.Link to tracking issue
Fixes #44306
Testing
Added tests to validate this behaviour and the expected output.