Merge pull request from GHSA-wh6w-3828-g9qf

* Unconditionally use `MemoryImageSlot`

This commit removes the internal branching within the pooling instance
allocator to sometimes use a `MemoryImageSlot` and sometimes now.
Instead this is now unconditionally used in all situations on all
platforms. This fixes an issue where the state of a slot could get
corrupted if modules being instantiated switched from having images to
not having an image or vice versa.

The bulk of this commit is the removal of the `memory-init-cow`
compile-time feature in addition to adding Windows support to the
`cow.rs` file.

* Fix compile on Unix

* Add a stricter assertion for static memory bounds

Double-check that when a memory is allocated the configuration required
is satisfied by the pooling allocator.

crates/c-api/Cargo.toml

@@ -33,9 +33,8 @@ cap-std = { workspace = true, optional = true }
 wasi-common = { workspace = true, optional = true }
 
 [features]
-default = ['jitdump', 'wat', 'wasi', 'cache', 'parallel-compilation', 'memory-init-cow']
+default = ['jitdump', 'wat', 'wasi', 'cache', 'parallel-compilation']
 jitdump = ["wasmtime/jitdump"]
 cache = ["wasmtime/cache"]
 parallel-compilation = ['wasmtime/parallel-compilation']
 wasi = ['wasi-cap-std-sync', 'wasmtime-wasi', 'cap-std', 'wasi-common']
-memory-init-cow = ["wasmtime/memory-init-cow"]