Improved Key Schema docs + tooltip

docs/integrations/secret-syncs/overview.mdx

@@ -99,6 +99,8 @@ via the UI or API for the third-party service you intend to sync secrets to.
 
 Key Schemas transform your secret keys by applying a prefix, suffix, or format pattern during sync to external destinations. This makes it clear which secrets are managed by Infisical and prevents accidental changes to unrelated secrets.
 
+Any destination secrets which do not match the schema will not get deleted or updated by Infisical.
+
 **Example:**
 - Infisical key: `SECRET_1`
 - Schema: `INFISICAL_{{secretKey}}`

frontend/src/components/secret-syncs/forms/SecretSyncOptionsFields/SecretSyncOptionsFields.tsx

@@ -146,11 +146,16 @@ export const SecretSyncOptionsFields = ({ hideInitialSync }: Props) => {
                       href="https://infisical.com/docs/integrations/secret-syncs/overview#key-schemas"
                       target="_blank"
                       rel="noopener noreferrer"
+                      className="underline"
                     >
                       Key Schema
                     </a>{" "}
                     to ensure that Infisical only manages the specific keys you intend, keeping
                     everything else untouched.
+                    <br />
+                    <br />
+                    Destination secrets that do not match the schema will not be deleted or updated,
+                    regardless of other settings.
                   </span>
                 }
               >