[vue] Fix updating run limit when input is empty
<v-text-field
v-if="isSuperUser"
- v-model="productConfig.runLimit"
+ :value="productConfig.runLimit"
type="number"
label="Run limit"
name="run-limit"
prepend-icon="mdi-speedometer"
:rules="rules.runLimit"
+ @input="productConfig.runLimit = $event || null"
/>
<v-checkbox
