[APM] Make environment and kuery parameters required

[smith]

These are currently optional in urlParams and in the endpoints that use them (environment was removed from uiFitlers in #89647 and kuery in #91932.)

Make them required where appropriate, as well as the things that use them.

See also #84526.

[elasticmachine]

Pinging @elastic/apm-ui (Team:apm)