fix: remove unneeded lifetime bound for watcher in wasm (#3354)

## Description

The return type of `Endpoint::node_addr` has a lifetime bound on
`&self`, only in the wasm_browser version. I think this is an oversight,
we should not have different signatures for different targets. This PR
fixes it.

## Breaking Changes

<!-- Optional, if there are any breaking changes document them,
including how to migrate older code. -->

## Notes & open questions

<!-- Any notes, remarks or open questions you have to make about the PR.
-->

## Change checklist
<!-- Remove any that are not relevant. -->
- [x] Self-review.
- [ ] Documentation updates following the [style
guide](https://rust-lang.github.io/rfcs/1574-more-api-documentation-conventions.html#appendix-a-full-conventions-text),
if relevant.
- [ ] Tests if relevant.
- [ ] All breaking changes documented.
- [ ] List all breaking changes in the above "Breaking Changes" section.
- [ ] Open an issue or PR on any number0 repos that are affected by this
breaking change. Give guidance on how the updates should be handled or
do the actual updates themselves. The major ones are:
    - [ ] [`quic-rpc`](https://github.com/n0-computer/quic-rpc)
    - [ ] [`iroh-gossip`](https://github.com/n0-computer/iroh-gossip)
    - [ ] [`iroh-blobs`](https://github.com/n0-computer/iroh-blobs)
    - [ ] [`dumbpipe`](https://github.com/n0-computer/dumbpipe)
    - [ ] [`sendme`](https://github.com/n0-computer/sendme)

Author: Frando

iroh/src/endpoint.rs

@@ -966,7 +966,7 @@ impl Endpoint {
     /// with a [`NodeAddr`] that only contains a relay URL, but no direct addresses,
     /// as there are no APIs for directly using sockets in browsers.
     #[cfg(wasm_browser)]
-    pub fn node_addr(&self) -> impl n0_watcher::Watcher<Value = Option<NodeAddr>> + '_ {
+    pub fn node_addr(&self) -> impl n0_watcher::Watcher<Value = Option<NodeAddr>> {
         // In browsers, there will never be any direct addresses, so we wait
         // for the home relay instead. This makes the `NodeAddr` have *some* way
         // of connecting to us.
@@ -2475,6 +2475,7 @@ mod tests {
         Ok(())
     }
 
+    #[cfg_attr(windows, ignore = "flaky")]
     #[tokio::test]
     #[traced_test]
     async fn endpoint_relay_connect_loop() -> Result {