Auto merge of #103880 - b-naber:field-ty-mir, r=lcnr

Use non-ascribed type as field's type in mir

Fixes https://github.com/rust-lang/rust/issues/96514

r? `@lcnr`

diff --cc compiler/rustc_middle/src/mir/mod.rs
Simple merge

diff --cc compiler/rustc_middle/src/mir/syntax.rs
Simple merge

diff --cc compiler/rustc_mir_build/src/build/expr/as_rvalue.rs
Simple merge

diff --cc compiler/rustc_mir_build/src/build/expr/into.rs
Simple merge

diff --cc compiler/rustc_mir_build/src/build/matches/test.rs
Simple merge

diff --cc compiler/rustc_mir_build/src/build/matches/util.rs
Simple merge

diff --cc compiler/rustc_mir_dataflow/src/value_analysis.rs
Simple merge