frontend: TimezoneSelect: Add aira label for timezone select component

Author: vyncent-t

frontend/src/components/App/Settings/__snapshots__/Settings.General.stories.storyshot

@@ -267,6 +267,7 @@
                       aria-describedby="cluster-selector-autocomplete-helper-text"
                       aria-expanded="false"
                       aria-invalid="false"
+                      aria-label="Timezone"
                       autocapitalize="none"
                       autocomplete="off"
                       class="MuiInputBase-input MuiOutlinedInput-input MuiInputBase-inputSizeSmall MuiInputBase-inputAdornedEnd MuiAutocomplete-input MuiAutocomplete-inputFocused css-19qh8xo-MuiInputBase-input-MuiOutlinedInput-input"

frontend/src/components/common/TimezoneSelect/TimezoneSelect.tsx

@@ -51,7 +51,16 @@ export default function TimezoneSelect(props: TimezoneSelectorProps) {
       includeInputInList
       openOnFocus
       renderInput={params => (
-        <TextField {...params} helperText={t('Timezone')} size="small" variant="outlined" />
+        <TextField
+          {...params}
+          helperText={t('Timezone')}
+          size="small"
+          variant="outlined"
+          inputProps={{
+            ...params.inputProps,
+            'aria-label': t('Timezone'),
+          }}
+        />
       )}
       onChange={(_ev, value) => onChange(value.name)}
       value={timezoneOptions.find(option => option.name === initialTimezone)}

frontend/src/components/common/TimezoneSelect/__snapshots__/TimezoneSelect.Default.stories.storyshot

@@ -14,6 +14,7 @@
             aria-describedby="cluster-selector-autocomplete-helper-text"
             aria-expanded="false"
             aria-invalid="false"
+            aria-label="Timezone"
             autocapitalize="none"
             autocomplete="off"
             class="MuiInputBase-input MuiOutlinedInput-input MuiInputBase-inputSizeSmall MuiInputBase-inputAdornedEnd MuiAutocomplete-input MuiAutocomplete-inputFocused css-19qh8xo-MuiInputBase-input-MuiOutlinedInput-input"

frontend/src/components/common/TimezoneSelect/__snapshots__/TimezoneSelect.NoInitialValue.stories.storyshot

@@ -14,6 +14,7 @@
             aria-describedby="cluster-selector-autocomplete-helper-text"
             aria-expanded="false"
             aria-invalid="false"
+            aria-label="Timezone"
             autocapitalize="none"
             autocomplete="off"
             class="MuiInputBase-input MuiOutlinedInput-input MuiInputBase-inputSizeSmall MuiInputBase-inputAdornedEnd MuiAutocomplete-input MuiAutocomplete-inputFocused css-19qh8xo-MuiInputBase-input-MuiOutlinedInput-input"