Rollup merge of #82179 - mbartlett21:patch-5, r=joshtriplett

Add functions `Duration::try_from_secs_{f32, f64}`

These functions allow constructing a Duration from a floating point value that could be out of range without panicking.

Tracking issue: #83400

library/std/src/lib.rs

@@ -261,6 +261,7 @@
 #![feature(doc_masked)]
 #![feature(doc_notable_trait)]
 #![feature(dropck_eyepatch)]
+#![feature(duration_checked_float)]
 #![feature(duration_constants)]
 #![feature(edition_panic)]
 #![feature(exact_size_is_empty)]