[block-executor] Fix missing lifetime

[gregnazario]

Description

This fails to build on Windows (but not on Mac) for some reason, unsure why it's skipped elsewhere.

Test Plan

cargo build now passes on windows instead of failing

The error prior to fixing it:

error[E0106]: missing lifetime specifier
   --> aptos-move\block-executor\src\view.rs:175:20
    |
172 |         base_view: &'a S,
    |                    -----
173 |         map: &'a BTreeMap<T::Key, T::Value>,
    |              ------------------------------
174 |         txn_idx: TxnIndex,
175 |     ) -> LatestView<T, S> {
    |                    ^ expected named lifetime parameter
    |
    = help: this function's return type contains a borrowed value with an elided lifetime, but the lifetime cannot be derived from the arguments
help: consider using the `'a` lifetime
    |
175 |     ) -> LatestView<'a, T, S> {
    |                     +++

[gregnazario]

This looks like it's already been solved in a different PR