[Prometheus Remote Write] Configurable size limits on incoming requests for remote_write metricset (max_compressed_body_bytes, max_decoded_body_bytes)

[gizas]

The prometheus remote-write integration should allow configurable size limits on incoming requests for the fields:

• max_compressed_body_bytes
• max_decoded_body_bytes

Above fields have been introduced after elastic/beats#48218

NOTE: The specific issue should be implemented once elastic/beats#48218 beats version has been merged and Versions 9.2.5, 9.3.1 and 9.4 released