ReactNativeCoreE2E: hardcode testIDs for View tests (#42026)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/42026

Previously, the examples allow overriding the testIDs for each inner example from ViewExample.js in RNTester. However, that setup relies on another infra/abstraction to inject the testIDs properly. For simplicity, let's just make them hardcoded using the pattern view-test-<example-name>.

Changelog: [Internal]

Reviewed By: NickGerleman

Differential Revision: D52349100

fbshipit-source-id: 09d51935318d0592a9aae7da61cab0c87ac69152