CPLAT-4217 CPLAT-4216 Release over_react 2.1.0

[rmconsole-readonly-wk]

Pull Requests included in release:

• CPLAT-4297: Use +dart1 suffix instead of -dart1
• CPLAT-3616 Warn consumers about props / state mutation
• CPLAT-4326: Check for git changes after build
• CPLAT-4360: Set auto_apply to dependents
• CPLAT-4476: Create workaround for ddc bug related to uninitialized maps
• CPLAT-4646: Add empty $ prefixed props mixins for backwards compatible consumers
• CPLAT-4110 Add Dart 2 only IDE snippets
• CPLAT-4674: Add workaround for ddc bug via props/state impl constructor

Requested by: @corwinsheahan-wf

Diff Between Last Tag and Proposed Release: 2.0.0...Workiva:release_over_react_2.1.0
Diff Between Last Tag and New Tag: 2.0.0...2.1.0

The logs for the request that created this PR can be found here

[aviary2-wf]

Security Insights

No security relevant content was detected by automated scans.

Action Items

• Review PR for security impact; comment "security review required" if needed or unsure
• Verify aviary.yaml coverage of security relevant code

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Questions or Comments? Reach out on Slack: #support-infosec.

[aaronlademann-wf]

Shouldn't need the extra [#254] unless we've run out of reference links at the bottom of this file.

[evanweible-wf]

QA +1

• Dev +1's only needed for Release ticket

@Workiva/release-management-pp