Round the number of pages passed to Memory.grow. NFC

Without this the trace line below prints (somewhat confusingly): ``` growMemory: 80740352 (+1048576 bytes / 16.999984741210938 pages) ```
emscripten-core · Aug 12, 2024 · 6770ee4 · 6770ee4
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commit 6770ee4
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diff --git a/src/library.js b/src/library.js
@@ -190,7 +190,7 @@ addToLibrary({
   // it. Returns 1 on success, 0 on error.
   $growMemory: (size) => {
     var b = wasmMemory.buffer;
-    var pages = (size - b.byteLength + {{{ WASM_PAGE_SIZE - 1 }}}) / {{{ WASM_PAGE_SIZE }}};
+    var pages = ((size - b.byteLength + {{{ WASM_PAGE_SIZE - 1 }}}) / {{{ WASM_PAGE_SIZE }}}) | 0;
 #if RUNTIME_DEBUG
     dbg(`growMemory: ${size} (+${size - b.byteLength} bytes / ${pages} pages)`);
 #endif

diff --git a/test/other/metadce/test_metadce_mem_O3_grow.gzsize b/test/other/metadce/test_metadce_mem_O3_grow.gzsize
@@ -1 +1 @@
-2570
+2571
diff --git a/test/other/metadce/test_metadce_mem_O3_grow.jssize b/test/other/metadce/test_metadce_mem_O3_grow.jssize
@@ -1 +1 @@
-5344
+5346