fix: incomplete URL substring sanitization in linkedin-browser-extension. (#16586)

Tighten LinkedIn browser extension popup URL handling by parsing the
active tab URL and matching on protocol, hostname, and pathname instead
of substring checks, preventing logic from running on non-LinkedIn
hosts.

Resolves [Code Scanning Alert
209](https://github.com/twentyhq/twenty/security/code-scanning/209) and
[Code Scanning Alert
210](https://github.com/twentyhq/twenty/security/code-scanning/210).

packages/twenty-apps/community/linkedin-browser-extension/browser-extension/src/entrypoints/popup/app.tsx

@@ -12,19 +12,28 @@ function App() {
   useEffect(() => {
     browser.tabs.query({ active: true, currentWindow: true }, function(tabs) {
       const currentTab = tabs[0];
-      if(currentTab.url?.includes('https://www.linkedin.com/in')) {
-        sendMessage('getPersonviaRelay').then(data => {
-          setValue({...data, type: 'person' })
-        })
-       }
 
-      if(currentTab.url?.includes('https://www.linkedin.com/company')) {
-       sendMessage('getCompanyviaRelay').then(data => {
-         setValue({...data, type: 'company'})
-       })
+      if (!currentTab.url) {
+        return;
+      }
+
+      let url = new URL(currentTab.url);
+
+      const isLinkedinHost =
+        url.protocol === 'https:' && url.hostname === 'www.linkedin.com';
+
+      if (isLinkedinHost && url.pathname.startsWith('/in/')) {
+        sendMessage('getPersonviaRelay').then((data) => {
+          setValue({ ...data, type: 'person' });
+        });
+      }
+
+      if (isLinkedinHost && url.pathname.startsWith('/company/')) {
+        sendMessage('getCompanyviaRelay').then((data) => {
+          setValue({ ...data, type: 'company' });
+        });
       }
     });
-
   }, []);
 
   const isPersonValue = (val: Value): val is PersonValue => {
@@ -38,25 +47,29 @@ function App() {
   return (
     <StyledMain>
       <h1>{JSON.stringify(value)}</h1>
-      {
-      isPersonValue(value) &&
-      <button onClick={async () => {
-        await sendMessage('createPerson', {
-          firstName: value.firstName,
-          lastName: value.lastName,
-        });
-
-      }}>save person to twenty</button>
-    }
-    {
-      isCompanyValue(value) &&
-      <button onClick={async () => {
-        await sendMessage('createCompany', {
-          name: value.companyName
-        });
-
-      }}>save company to twenty</button>
-    }
+      {isPersonValue(value) && (
+        <button
+          onClick={async () => {
+            await sendMessage('createPerson', {
+              firstName: value.firstName,
+              lastName: value.lastName,
+            });
+          }}
+        >
+          save person to twenty
+        </button>
+      )}
+      {isCompanyValue(value) && (
+        <button
+          onClick={async () => {
+            await sendMessage('createCompany', {
+              name: value.companyName,
+            });
+          }}
+        >
+          save company to twenty
+        </button>
+      )}
     </StyledMain>
   );
 }