[Java][resttemplate] Make queryParams known to UriComponents builder so it can properly encode them

[wing328]

Make queryParams known to UriComponents builder so it can properly encode them

Based on https://github.com/OpenAPITools/openapi-generator/pull/14131

To close #13393

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[wing328]

samples/client/echo_api/java/resttemplate/src/test/java/org/openapitools/client/CustomTest.java is a good starting point to add tests.

https://github.com/OpenAPITools/openapi-generator/pull/14279/files#diff-ed90d9fe8e57614eb4b47b9ac9e853f96de0cb4add16a9c2cfaab733d7aea31fR47 is a good endpoint for testing query parameters of different types.