ci: disable npm cache to ensure build consistency - #2660

fatal error: module 'RCTDeprecation' in AST file '/Users/runner/work/react-native-test-app/react-native-test-app/template-example/ios/build/ModuleCache.noindex/29Q4PLPCVKUCC/RCTDeprecation-2SNK3IDRCXN99.pcm' (imported by AST file '/Users/runner/work/react-native-test-app/react-native-test-app/template-example/ios/build/Build/Intermediates.noindex/PrecompiledHeaders/ReactTestApp-Bridging-Header-swift_JJWR92F0YERF-clang_29Q4PLPCVKUCC.pch') is not defined in any loaded module map file; maybe you need to load '/Users/runner/work/react-native-test-app/react-native-test-app/template-example/node_modules/.generated/ios/../../../ios/Pods/Headers/Public/RCTDeprecation/RCTDeprecation.modulemap'?

fatal error: module 'RCTDeprecation' in AST file '/Users/runner/work/react-native-test-app/react-native-test-app/template-example/ios/build/ModuleCache.noindex/1QK0N68E8OFZU/RCTDeprecation-2SNK3IDRCXN99.pcm' (imported by AST file '/Users/runner/work/react-native-test-app/react-native-test-app/template-example/ios/build/Build/Intermediates.noindex/PrecompiledHeaders/ReactTestApp-Bridging-Header-swift_1NFFQ157BSCNO-clang_1QK0N68E8OFZU.pch') is not defined in any loaded module map file; maybe you need to load '/Users/runner/work/react-native-test-app/react-native-test-app/template-example/node_modules/.generated/ios/../../../ios/Pods/Headers/Public/RCTDeprecation/RCTDeprecation.modulemap'?