fix(rcm): remote config payloads error

[avara1986]

When Remote Configuration (RC) receives new configurations, the RC Client has two kinds of actions: removing target file configurations and loading new target file configurations.

The problem arises when we receive both kinds of actions simultaneously, as the load action overrides the remove action. This error occurs if someone creates and removes Dynamic Instrumentation Probes rapidly, within a time interval shorter than the Remote Config interval (5s).

To fix this issue, we append all new configurations and configurations to remove, and dispatch them at the end of the RC request.

Checklist

• Change(s) are motivated and described in the PR description.
• Testing strategy is described if automated tests are not included in the PR.
• Risk is outlined (performance impact, potential for breakage, maintainability, etc).
• Change is maintainable (easy to change, telemetry, documentation).
• Library release note guidelines are followed.
• Documentation is included (in-code, generated user docs, public corp docs).

Reviewer Checklist

• Title is accurate.
• No unnecessary changes are introduced.
• Description motivates each change.
• Avoids breaking API changes unless absolutely necessary.
• Testing strategy adequately addresses listed risk(s).
• Change is maintainable (easy to change, telemetry, documentation).
• Release note makes sense to a user of the library.
• Reviewer has explicitly acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment.

[pr-commenter]

Benchmarks

Comparing candidate commit e2372a9 in PR branch avara1986/APPSEC-9946-rc-error-overriding-payloads with baseline commit ba3a1f4 in branch 1.x.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 90 cases.