fix: Couple of Sentry errors using suggestions from static analysis (#102)

Author: spalmurray-codecov

src/content/github/file/main.tsx

@@ -67,7 +67,7 @@ async function main(): Promise<void> {
       return;
     }
     globals.coverageButton = createCoverageButton();
-    process(urlMetadata);
+    await process(urlMetadata);
   } catch (e) {
     Sentry.captureException(e);
     throw e;

src/content/github/pr/main.tsx

@@ -47,7 +47,12 @@ async function execute() {
   createContainer();
 
   const coverageReport = await getPRReport(urlMetadata);
-  if (!coverageReport.files) {
+  if (
+    !coverageReport?.files ||
+    !coverageReport?.totals?.base?.coverage ||
+    !coverageReport?.totals?.head?.coverage ||
+    !coverageReport?.totals?.patch?.coverage
+  ) {
     showError();
     return;
   }