refactor!: migrate workspace to Rust 1.85 and Edition 2024 (#4114)

- Set edition = "2024" in all 55 member crates
- Centralize rust-version = "1.85" in [workspace.package]
- Add unsafe to extern "C" blocks (Edition 2024 requirement)
- Remove redundant ref/ref mut in match patterns (match ergonomics)
- Escape reserved keyword gen as r#gen in examples
- Fix RPIT lifetime over-capture in TagTokens::to_spanned and Registry::get_handler
- Remove ref from macro-generated pattern in html_element.rs
- Update rustfmt.toml and CI workflows to 1.85
- Apply Edition 2024 rustfmt style

* chore: regenerate lock

* chore(docs): update if-let gaurd stablization version

* chore: update rand to 0.10

- Update workspace rand dependency from 0.9 to 0.10
- Rename trait import Rng to RngExt for extension methods
- Replace removed SmallRng::from_os_rng() with from_rng()
- Remove small_rng feature flag (always available in 0.10)
- Keep rand 0.9 as rand_09 in function_router and router
  examples for lipsum MarkovChain API compatibility

* chore: update fake to 5.x

* docs: update MSRV to 1.85.0 in Next version docs

* refactor: remove redundant Future imports now in Edition 2024 prelude

* chore: update MSRV references from 1.84.0 to 1.85.0 in macro tests

Author: Madoshakalaka

.github/workflows/main-checks.yml

@@ -70,7 +70,7 @@ jobs:
       fail-fast: false
       matrix:
         toolchain:
-          - 1.84.0
+          - 1.85.0
           - stable
 
     steps:
@@ -121,7 +121,7 @@ jobs:
       fail-fast: false
       matrix:
         toolchain:
-          - 1.84.0
+          - 1.85.0
           - stable
           - nightly
 
@@ -143,7 +143,7 @@ jobs:
           # see https://github.com/orgs/community/discussions/25725
           RUSTFLAGS: ${{ matrix.toolchain == 'nightly' && '--cfg nightly_yew' || '' }}
         run: |
-          if [[ "${{ matrix.toolchain }}" == "1.84.0" ]]; then
+          if [[ "${{ matrix.toolchain }}" == "1.85.0" ]]; then
             cargo test --all-targets -p yew-agent -p yew-agent-macro -p yew-router
           else
             ls packages | grep -v "^yew$" | xargs -I {} cargo test --all-targets -p {}
@@ -211,7 +211,7 @@ jobs:
       - name: Setup toolchain
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: 1.84.0
+          toolchain: 1.85.0
 
       - uses: Swatinem/rust-cache@v2
         with: