TestConfigEnvAddCmd/no_effects is flaky

[tgummerer]

=== FAIL: cmd/pulumi TestConfigEnvAddCmd/no_effects (0.05s)
Converting to pcl...
    config_env_add_test.go:121: 
        	Error Trace:	/Users/runner/work/pulumi/pulumi/pkg/cmd/pulumi/config_env_add_test.go:121
        	Error:      	Not equal: 
        	            	expected: "KEY  VALUE\nThe stack's environment does not define the `environmentVariables`, `files`, or `pulumiConfig` properties.\nWithout at least one of these properties, the environment will not affect the stack's behavior.\n\n\nSave? No\n"
        	            	actual  : "KEY  VALUE\nThe stack's environment does not define the `environmentVariables`, `files`, or `pulumiConfig` properties.\nWithout at least one of these properties, the environment will not affect the stack's behavior.\n\n\nSave? ▸Yes  NoSave? No\n"
        	            	
        	            	Diff:
        	            	--- Expected
        	            	+++ Actual
        	            	@@ -5,3 +5,3 @@
        	            	 
        	            	-Save? No
        	            	+Save? ▸Yes  NoSave? No
        	            	 
        	Test:       	TestConfigEnvAddCmd/no_effects

=== FAIL: cmd/pulumi TestConfigEnvAddCmd (0.01s)

From https://github.com/pulumi/pulumi/actions/runs/8716869982/job/23911335924