Make create_typed_array an unsafe function

[heh9]

Make create_typed_array function in components/script/dom/vrframedata.rs an unsafe function as it accepts an unsafe pointer
Wrapped the function calls into an unsafe block in components/script/dom/xrview.rs and components/script/dom/vrframedata.rs

---

• ./mach build -d does not report any errors
• ./mach test-tidy does not report any errors
• These changes fix #22600 (GitHub issue number if applicable)

• There are tests for these changes OR
• These changes do not require tests because the reporter of the issue said it's fine if it compiles with no warning or errors

---

This change is 

[highfive]

Thanks for the pull request, and welcome! The Servo team is excited to review your changes, and you should hear from @nox (or someone else) soon.

[highfive]

Heads up! This PR modifies the following files:

• @asajeffrey: components/script/dom/vrframedata.rs, components/script/dom/xrview.rs
• @KiChjang: components/script/dom/vrframedata.rs, components/script/dom/xrview.rs

[highfive]

Warning

• These commits modify unsafe code. Please review it carefully!
• These commits modify script code, but no tests are modified. Please consider adding a test!

[jdm]

@bors-servo r+
Thanks!

[bors-servo]

📌 Commit 8a615fc has been approved by jdm

[bors-servo]

⌛️ Testing commit 8a615fc with merge 5039e30...

[bors-servo]

💔 Test failed - mac-rel-wpt4

[jdm]

@bors-servo retry

• #22619

[bors-servo]

⌛️ Testing commit 8a615fc with merge 00b89a3...

[bors-servo]

💔 Test failed - mac-rel-wpt3

[CYBAI]

@bors-servo retry

{
    "status": "TIMEOUT", 
    "group": "default", 
    "message": null, 
    "stack": null, 
    "subtest": null, 
    "test": "/_mozilla/mozilla/referrer-policy/no-referrer-when-downgrade/meta-csp/cross-origin/http-http/iframe-tag/insecure-protocol.swap-origin-redirect.http.html", 
    "line": 59360, 
    "action": "test_result", 
    "expected": "OK"
}

{
    "status": "FAIL", 
    "group": "default", 
    "message": "assert_equals: It came from a sandboxed iframe expected \"null\" but got \"\"", 
    "stack": "onmessage</onmessage<@http://web-platform.test:8000/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html:17:7\nTest.prototype.step@http://web-platform.test:8000/resources/testharness.js:1566:20\nTest.prototype.step_func_done/<@http://web-platform.test:8000/resources/testharness.js:1606:17\n", 
    "subtest": "Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used", 
    "test": "/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html", 
    "line": 19602, 
    "action": "test_result", 
    "expected": "TIMEOUT"
}
{
    "status": "OK", 
    "group": "default", 
    "message": null, 
    "stack": null, 
    "subtest": null, 
    "test": "/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html", 
    "line": 19603, 
    "action": "test_result", 
    "expected": "TIMEOUT"
}

[bors-servo]

💣 Failed to start rebuilding: Unknown error

[bors-servo]

⌛️ Testing commit 8a615fc with merge 0f55c73...

[bors-servo]

💔 Test failed - mac-rel-css1

[nox]

@bors-servo retry

[bors-servo]

⌛️ Testing commit 8a615fc with merge e49b7ab...

[bors-servo]

💔 Test failed - mac-rel-css1

[CYBAI]

@bors-servo retry

[bors-servo]

⌛️ Testing commit 8a615fc with merge e7a0a44...

[bors-servo]

☀️ Test successful - android-mac, arm32, arm64, linux-rel-css, linux-rel-wpt, mac-rel-css1, mac-rel-css2, mac-rel-wpt1, mac-rel-wpt2, mac-rel-wpt3, mac-rel-wpt4, magicleap, status-taskcluster
Approved by: jdm
Pushing e7a0a44 to master...