No need for the plugin to be enabled when changing its license key

Fixes #4525

CHANGELOG-v3.md

@@ -22,6 +22,7 @@
 - Fixed a bug where Live Preview wouldn’t open after it had been previously closed, if the active target was configured with `refresh: false`. ([#6356](https://github.com/craftcms/cms/issues/6356))
 - Fixed a bug where site-specific tests were not able to properly use `craft\test\fixtures\elements\AssetFixture`. ([#6309](https://github.com/craftcms/cms/issues/6309))
 - Fixed a PHP error that could occur when using `craft\test\TestMailer` in some scenarios. ([#6259](https://github.com/craftcms/cms/issues/6259))
+- Fixed a bug where it wasn’t possible to change a disabled plugin’s license key. ([#4525](https://github.com/craftcms/cms/issues/4525))
 
 ## 3.4.27 - 2020-07-03
 

src/services/Plugins.php

@@ -1131,11 +1131,6 @@ class Plugins extends Component
      */
     public function setPluginLicenseKey(string $handle, string $licenseKey = null): bool
     {
-        if (($plugin = $this->getPlugin($handle)) === null) {
-            throw new InvalidPluginException($handle);
-        }
-
-        /** @var Plugin $plugin */
         // Validate the license key
         $normalizedLicenseKey = $this->normalizePluginLicenseKey($licenseKey);