fix Array JSONEncodable #343

Job	Run time
Cocoapods Integration Tests - macOS	38s
Run swift build for SPM packages (apollo-ios)	1m 17s
changes	5s
Codegen Test Configurations - macOS	9m 34s
Run swift build for SPM packages (apollo-ios-codegen)	1m 3s
Run swift build for SPM packages (apollo-ios-pagination)	1m 15s
Run Tuist Generation	2m 44s
Apollo Integration Tests - macOS	5m 48s
Apollo Unit Tests - macOS	3m 21s
Codegen CLI Unit Tests - macOS	4m 59s
Codegen Lib Unit Tests - macOS	4m 27s
ApolloPagination Unit Tests - macOS	4m 24s
	39m 35s

Provide feedback