chore: remove apitoken.username (#9448)

Removes usage of the deprecated API token property `username` and uses
`tokenName` instead.

Affected components:

Token table:

![image](https://github.com/user-attachments/assets/7275e9ae-a79c-4815-9f8d-157008480b97)


Token deletion dialog:

![image](https://github.com/user-attachments/assets/1c47cd3d-c7ff-4547-9779-eaba16274d1e)


Environment post-clone screen (which is automatically hidden now, so it
... doesn't matter)

frontend/src/component/common/ApiTokenTable/RemoveApiTokenButton/RemoveApiTokenButton.tsx

@@ -63,8 +63,8 @@ export const RemoveApiTokenButton = ({
                     <br />
                     <StyledUl>
                         <li>
-                            <strong>username</strong>:{' '}
-                            <code>{token.username}</code>
+                            <strong>name</strong>:{' '}
+                            <code>{token.tokenName}</code>
                         </li>
                         <li>
                             <strong>type</strong>: <code>{token.type}</code>

frontend/src/component/common/ApiTokenTable/useApiTokenTable.tsx

@@ -39,7 +39,7 @@ export const useApiTokenTable = (
             },
             {
                 Header: 'Token name',
-                accessor: 'username',
+                accessor: 'tokenName',
                 Cell: HighlightCell,
                 minWidth: 35,
             },

frontend/src/component/environments/EnvironmentTable/EnvironmentActionCell/EnvironmentTokenDialog/EnvironmentTokenDialog.tsx

@@ -29,7 +29,7 @@ export const EnvironmentTokenDialog = ({
             Your new token has been created successfully.
         </Typography>
         <Typography variant='body1'>
-            You can also find it as "<strong>{token?.username}</strong>" in the{' '}
+            You can also find it as "<strong>{token?.tokenName}</strong>" in the{' '}
             <Link to='/admin/api'>API access page</Link>.
         </Typography>
         <UserToken token={token?.secret || ''} />

frontend/src/hooks/api/getters/useApiTokens/useApiTokens.ts

@@ -5,7 +5,7 @@ import handleErrorResponses from '../httpErrorResponseHandler';
 
 export interface IApiToken {
     createdAt: Date;
-    username: string;
+    tokenName: string;
     secret: string;
     type: string;
     project?: string;