Do not fail to locate messages when a fragment directive has been appended.

### My Use Case

- #### What I Want To Achieve

Do not fail to locate messages included in the URI fragment, merely when a fragment directive has been appended, thereby allowing the browser to `` the content of text directives contained therein.

- #### Why I Want To Achieve This

Although being able to hyperlink messages is useful, like [`develop.element.io/#/room/#foundation-office:matrix.org/$w_Qy0VgvRXswQWFPxHEOkPMV0xodm8VR6eQGf99SeTs`](https://develop.element.io/#/room/#foundation-office:matrix.org/$w_Qy0VgvRXswQWFPxHEOkPMV0xodm8VR6eQGf99SeTs), being able to link to specific sections thereof can be more important, when a long message is sent. However, if I [append `:~:text=hopefully%20the%20new%20rooms%20are%20more%20performant%20for%20you%2C%20and%20don't%20reset%20as%20often`, to create `develop.element.io/#/room/#foundation-office:matrix.org/$w_Qy0VgvRXswQWFPxHEOkPMV0xodm8VR6eQGf99SeTs:~:text=hopefully%20the%20new%20rooms%20are%20more%20performant%20for%20you%2C%20and%20don't%20reset%20as%20often`](https://develop.element.io/#/room/#foundation-office:matrix.org/$w_Qy0VgvRXswQWFPxHEOkPMV0xodm8VR6eQGf99SeTs:~:text=hopefully%20the%20new%20rooms%20are%20more%20performant%20for%20you%2C%20and%20don't%20reset%20as%20often), I see:

> Tried to load a specific point in this room's timeline, but was unable to find it.

The ECMAScript console outputs:

~~~MA
15:42:54.696 XHRGET
https://matrix-client.matrix.org/_matrix/client/v3/rooms/!XnktFVraJdZXcy_wxBQYoDUGWFqgffmDYrK7m6sW90w/event/$w_Qy0VgvRXswQWFPxHEOkPMV0xodm8VR6eQGf99SeTs:~:text=And finally, thanks for your patience while we bombard you with at-room notifications - hopefully the new rooms are more performant for you, and don't reset as often. If you have any questions, let us know here.
[HTTP/2 404 1094ms]

15:42:56.139 XHRGET
https://matrix-client.matrix.org/_matrix/client/v3/rooms/!XnktFVraJdZXcy_wxBQYoDUGWFqgffmDYrK7m6sW90w/context/$w_Qy0VgvRXswQWFPxHEOkPMV0xodm8VR6eQGf99SeTs:~:text=And finally, thanks for your patience while we bombard you with at-room notifications - hopefully the new rooms are more performant for you, and don't reset as often. If you have any questions, let us know here.?limit=0&filter={"lazy_load_members":true}
[HTTP/2 404 121ms]

15:42:56.380 Error loading timeline panel at !XnktFVraJdZXcy_wxBQYoDUGWFqgffmDYrK7m6sW90w/$w_Qy0VgvRXswQWFPxHEOkPMV0xodm8VR6eQGf99SeTs:~:text=And finally, thanks for your patience while we bombard you with at-room notifications - hopefully the new rooms are more performant for you, and don't reset as often. If you have any questions, let us know here. M_NOT_FOUND: MatrixError: [404] Event not found. (https://matrix-client.matrix.org/_matrix/client/v3/rooms/!XnktFVraJdZXcy_wxBQYoDUGWFqgffmDYrK7m6sW90w/context/%24w_Qy0VgvRXswQWFPxHEOkPMV0xodm8VR6eQGf99SeTs%3A~%3Atext%3DAnd%20finally%2C%20thanks%20for%20your%20patience%20while%20we%20bombard%20you%20with%20at-room%20notifications%20-%20hopefully%20the%20new%20rooms%20are%20more%20performant%20for%20you%2C%20and%20don't%20reset%20as%20often.%20If%20you%20have%20any%20questions%2C%20let%20us%20know%20here.?limit=0&filter=%7B%22lazy_load_members%22%3Atrue%7D)
HTTPError errors.ts:41
MatrixError errors.ts:109
parseErrorResponse utils.ts:95
requestOtherUrl fetch.ts:321
request fetch.ts:219
doAuthedRequest fetch.ts:167
authedRequest fetch.ts:131
getEventContext client.ts:4473
getEventTimeline client.ts:4523
load timeline-window.ts:139
loadTimeline TimelinePanel.tsx:1535
initTimeline TimelinePanel.tsx:1374
componentDidUpdate TimelinePanel.tsx:341
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rageshake.ts:69:27
fnName rageshake.ts:69
instrumentConsole console.ts:39
logger.ts:114
onError TimelinePanel.tsx:1480
(Async: promise callback)
loadTimeline TimelinePanel.tsx:1544
initTimeline TimelinePanel.tsx:1374
componentDidUpdate TimelinePanel.tsx:341
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commitRoot
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performWorkOnRoot
performWorkOnRootViaSchedulerTask
performWorkUntilDeadline scheduler.production.js:151
~~~

- #### How I Want To Achieve This

Navigate to text directives manually appended to the URI fragment.

### Considered Alternatives

Discard fragment directives, and render a banner that informs the user of this, if the fragment directive contained a text directive. [^1] The banner should contain the included text, albeit sanitised.

[^1]: [`stackoverflow.com/revisions/79839038/1`](https://stackoverflow.com/revisions/79839038/1#content:~:text=At%20web.dev/articles/text%2Dfragments%23the_fragment_directive%2C%20Google%20states%20that,therefore%20called%20a%20text%20directive.)

### Additional Context

I originally reported, at [`issues/31023#issuecomment-3616595234`](https://github.com/element-hq/element-web/issues/31023#issuecomment-3616595234), that “Appending a fragment directive to the URI causes the viewport to move upward 50 %.” However:

> We don't support this as a feature so I don't think that this is a bug. Feel free to open a separate feature request though.

Considering that, in those situations, the text directive *is* supported, I'm surprised.

That decision is why I haven't first reported not being able to navigate to linked-to messages as a bug. In its stead, I have included it as an aim of this enhancement request, but shall separate it if advised to.