[chore][receiver/hostmetrics] Skip process user error (un)muted test …

…on non-Linux (open-telemetry#28829)

**Description:**
Fix open-telemetry#28828 - this is just disabling the test on non-Linux. The broken
test was introduced via open-telemetry#28661.

receiver/hostmetricsreceiver/internal/scraper/processscraper/process_scraper_test.go

@@ -935,6 +935,7 @@ func TestScrapeMetrics_MuteErrorFlags(t *testing.T) {
 
  type testCase struct {
  name string
+ skipTestCase bool
  muteProcessNameError bool
  muteProcessExeError bool
  muteProcessIOError bool
@@ -1000,6 +1001,7 @@ func TestScrapeMetrics_MuteErrorFlags(t *testing.T) {
  },
  {
  name: "Process User Error Muted",
+ skipTestCase: runtime.GOOS != "linux",
  muteProcessUserError: true,
  skipProcessNameError: true,
  muteProcessExeError: true,
@@ -1008,6 +1010,7 @@ func TestScrapeMetrics_MuteErrorFlags(t *testing.T) {
  },
  {
  name: "Process User Error Unmuted",
+ skipTestCase: runtime.GOOS != "linux",
  muteProcessUserError: false,
  skipProcessNameError: true,
  muteProcessExeError: true,
@@ -1019,6 +1022,9 @@ func TestScrapeMetrics_MuteErrorFlags(t *testing.T) {
 
  for _, test := range testCases {
  t.Run(test.name, func(t *testing.T) {
+ if test.skipTestCase {
+ t.Skipf("skipping test %v on %v", test.name, runtime.GOOS)
+ }
  config := &Config{MetricsBuilderConfig: metadata.DefaultMetricsBuilderConfig()}
  if !test.omitConfigField {
  config.MuteProcessNameError = test.muteProcessNameError