Fix watcher & resource race conditions #4609

Job	Run time
Performance Tests	4m 37s
Build Unsigned Snapshot	1m 49s
Lint	3m 57s
Unit tests with race condition detection	2m 24s
Unit Tests	2m 14s
Integration Tests - Official OSS Images (bookworm, stable, debian)	5m 45s
Integration Tests (ubuntu, 22.04)	9m 28s
Load Tests	4m 26s
Integration Tests - Official Plus Images (alpine, 3.20, r32, alpine, /nginx-plus/agent)	3m 58s
Integration Tests (redhatenterprise, 9)	8m 30s
Integration Tests - Official Plus Images (alpine, 3.19, r31, alpine, /nginx-plus/agent)	4m 4s
Integration Tests (alpine, 3.19)	6m 35s
Integration Tests - Official Plus Images (debian, bookworm, r32, debian, /nginx-plus/agent)	4m 14s
Integration Tests - Official OSS Images (bookworm, mainline, debian)	5m 45s
Integration Tests - Official Plus Images (debian, bookworm, r31, debian, /nginx-plus/agent)	4m 13s
Integration Tests - Official OSS Images (alpine, stable, alpine)	5m 47s
Integration Tests - Official OSS Images (alpine, mainline, alpine)	5m 29s
Publish NGINX Agent v3 packages	0s
	1h 23m 15s

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