fix(webapp): prevent duplicate preview env image tags #3464

Job	Run time
typecheck / typecheck	5m 43s
e2e / 🧪 CLI v3 tests (windows-latest - pnpm)	4m 57s
e2e / 🧪 CLI v3 tests (ubuntu-latest - npm)	2m 22s
e2e / 🧪 CLI v3 tests (windows-latest - npm)	4m 51s
e2e / 🧪 CLI v3 tests (ubuntu-latest - pnpm)	2m 10s
units / webapp / 🧪 Unit Tests: Webapp (1, 8)	5m 18s
units / webapp / 🧪 Unit Tests: Webapp (5, 8)	2m 35s
units / webapp / 🧪 Unit Tests: Webapp (6, 8)	6m 52s
units / webapp / 🧪 Unit Tests: Webapp (2, 8)	3m 25s
units / webapp / 🧪 Unit Tests: Webapp (3, 8)	2m 18s
units / webapp / 🧪 Unit Tests: Webapp (8, 8)	5m 30s
units / webapp / 🧪 Unit Tests: Webapp (7, 8)	3m 29s
units / packages / 🧪 Unit Tests: Packages (1, 1)	3m 37s
units / webapp / 🧪 Unit Tests: Webapp (4, 8)	5m 16s
units / internal / 🧪 Unit Tests: Internal (3, 8)	3m 41s
units / internal / 🧪 Unit Tests: Internal (2, 8)	4m 13s
units / internal / 🧪 Unit Tests: Internal (6, 8)	4m 35s
units / internal / 🧪 Unit Tests: Internal (8, 8)	1m 50s
units / internal / 🧪 Unit Tests: Internal (1, 8)	5m 57s
units / internal / 🧪 Unit Tests: Internal (5, 8)	4m 14s
units / internal / 🧪 Unit Tests: Internal (7, 8)	2m 34s
units / internal / 🧪 Unit Tests: Internal (4, 8)	4m 32s
units / packages / 📊 Merge Reports	20s
units / internal / 📊 Merge Reports	23s
units / webapp / 📊 Merge Reports	44s
	1h 31m 26s

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