[FEAT] Restrict file size of blame operation

- Currently there exists a restriction to not render and show files that
are larger than what's configured in `[UI].MAX_DISPLAY_FILE_SIZE`.
- Apply the same restriction to the blame operation as well, as the
blame operation can be seen as displaying a file.
- Add integration test.
- Ref: #2394

templates/repo/blame.tmpl

@@ -30,6 +30,15 @@
 	</h4>
 	<div class="ui attached table unstackable segment">
 		<div class="file-view code-view unicode-escaped">
+			{{if .IsFileTooLarge}}
+				<table>
+					<tbody>
+						<tr>
+							<td class="gt-text-center gt-p-1"><strong>{{ctx.Locale.Tr "repo.file_too_large"}}</strong></td>
+						</tr>
+					</tbody>
+				</table>
+			{{else}}
 			<table>
 				<tbody>
 					{{range $row := .BlameRows}}
@@ -75,6 +84,7 @@
 					{{end}}
 				</tbody>
 			</table>
+			{{end}}
 		</div>
 	</div>
 </div>