Merge pull request swiftlang#83307 from mhegazy/build-mimalloc-before-asserts

[build.ps1] Make sure mimalloc is built before we build noasserts toolchain

Author: compnerd

utils/build.ps1

@@ -3694,14 +3694,14 @@ if (-not $SkipBuild) {
 
 Install-HostToolchain
 
-if (-not $SkipBuild -and $IncludeNoAsserts) {
-  Build-NoAssertsToolchain
-}
-
 if (-not $SkipBuild) {
   Invoke-BuildStep Build-mimalloc $HostPlatform
 }
 
+if (-not $SkipBuild -and $IncludeNoAsserts) {
+  Build-NoAssertsToolchain
+}
+
 if (-not $SkipBuild -and -not $IsCrossCompiling) {
   Invoke-BuildStep Build-DocC $HostPlatform
 }