trim whitespaces from license key input field (#7084)

- Add onBlur prop support to Password component
- Trim license key on blur in InstanceSetting component
- Trim license key before saving in InstanceSettings component

This ensures leading and trailing whitespace is always removed
from the license key input field, both when the user leaves the
field and when settings are saved.

Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com>
Co-authored-by: windmill-internal-app[bot] <windmill-internal-app[bot]@users.noreply.github.com>

frontend/src/lib/components/InstanceSetting.svelte

@@ -368,6 +368,11 @@
 							onKeyDown={() => {
 								licenseKeyChanged = true
 							}}
+							onBlur={() => {
+								if ($values[setting.key] && typeof $values[setting.key] === 'string') {
+									$values[setting.key] = $values[setting.key].trim()
+								}
+							}}
 							bind:password={$values[setting.key]}
 						/>
 						<Button

frontend/src/lib/components/InstanceSettings.svelte

@@ -136,6 +136,11 @@
 
 		let shouldReloadPage = false
 		if ($values) {
+			// Trim license key before saving
+			if ($values['license_key'] && typeof $values['license_key'] === 'string') {
+				$values['license_key'] = $values['license_key'].trim()
+			}
+
 			const allSettings = [...Object.values(settings), scimSamlSetting].flatMap((x) =>
 				Object.entries(x)
 			)

frontend/src/lib/components/Password.svelte

@@ -9,6 +9,7 @@
 		required?: boolean
 		small?: boolean
 		onKeyDown?: (event: KeyboardEvent) => void
+		onBlur?: (event: FocusEvent) => void
 	}
 
 	let {
@@ -17,7 +18,8 @@
 		disabled = false,
 		required = false,
 		small = false,
-		onKeyDown
+		onKeyDown,
+		onBlur
 	}: Props = $props()
 
 	let red = $derived(required && (password == '' || password == undefined))
@@ -43,6 +45,7 @@
 			type="password"
 			bind:value={password}
 			onkeydown={onKeyDown}
+			onblur={onBlur}
 			autocomplete="new-password"
 			{placeholder}
 			{disabled}
@@ -55,6 +58,7 @@
 			type="text"
 			bind:value={password}
 			onkeydown={bubble('keydown')}
+			onblur={onBlur}
 			autocomplete="new-password"
 			{placeholder}
 			{disabled}