Rollup merge of #135711 - estebank:issue-135649, r=davidtwco

Do not ICE on default_field_value const with lifetimes

`#![feature(default_field_values)]` uses a `const` body that should be treated as inline `const`s, but is actually being detected otherwise. This is similar to the situation in #78174, so we take the same solution: we check if the const actually comes from a field, and if it does, we use that logic to get the appropriate lifetimes and not ICE during borrowck.

Fix #135649.

Author: matthiaskrgr