[arm64][msvc] fix cctest build for ARM64 MSVC

Changes the lambda capture for this test so that referenced variables
are captured automatically. This means MSVC and Clang can compile the
same test without compiler-specific #ifdef's.

Bug: v8:10012
Change-Id: Ife4ee050e227478842c0f8def92adb0857082ccf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2066984Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Richard Townsend <richard.townsend@arm.com>
Cr-Commit-Position: refs/heads/master@{#66414}

test/cctest/test-assembler-arm64.cc

@@ -6701,11 +6701,7 @@ static void LdrLiteralRangeHelper(
 
   size_t expected_pool_size = 0;
 
-#if defined(_M_ARM64) && !defined(__clang__)
-  auto PoolSizeAt = [pool_entries, kEntrySize](int pc_offset) {
-#else
-  auto PoolSizeAt = [unaligned_emission](int pc_offset) {
-#endif
+  auto PoolSizeAt = [&](int pc_offset) {
     // To determine padding, consider the size of the prologue of the pool,
     // and the jump around the pool, which we always need.
     size_t prologue_size = 2 * kInstrSize + kInstrSize;