[browser][AOT] faster wasm-opt in CI tests (#115624)

* more

* more

Author: pavelsavara

eng/testing/tests.browser.targets

@@ -13,9 +13,10 @@
 
     <!--
       - For regular library tests, it will use the symbols file from the runtime pack.
-      - for AOT library tests, we use WasmNativeStrip=false, so we already have symbols
+      - for AOT library tests, we avoid WasmNativeDebugSymbols so that we don't run OOM on helix during wasm-opt
     -->
-    <WasmNativeStrip Condition="'$(WasmNativeStrip)' == '' and '$(RunAOTCompilation)' == 'true'">false</WasmNativeStrip>
+    <WasmNativeStrip Condition="'$(ContinuousIntegrationBuild)' == 'true' and '$(RunAOTCompilation)' == 'true'">true</WasmNativeStrip>
+    <WasmNativeDebugSymbols Condition="'$(ContinuousIntegrationBuild)' == 'true' and '$(RunAOTCompilation)' == 'true'">false</WasmNativeDebugSymbols>
     <WasmEmitSymbolMap Condition="'$(WasmEmitSymbolMap)' == ''">true</WasmEmitSymbolMap>
 
     <_WasmMainJSFileName Condition="'$(WasmMainJSPath)' != ''">$([System.IO.Path]::GetFileName('$(WasmMainJSPath)'))</_WasmMainJSFileName>

eng/testing/tests.wasm.targets

@@ -133,6 +133,7 @@
       <_WasmPropertyNames Include="WasmDedup" />
       <_WasmPropertyNames Include="WasmLinkIcalls" />
       <_WasmPropertyNames Include="WasmNativeStrip" />
+      <_WasmPropertyNames Include="WasmNativeDebugSymbols" />
       <_WasmPropertyNames Include="_WasmDevel" />
       <_WasmPropertyNames Include="_WasmStrictVersionMatch" />
       <_WasmPropertyNames Include="WasmEmitSymbolMap" />

src/mono/browser/build/BrowserWasmApp.targets

@@ -321,7 +321,6 @@
 
       <_EmccCommonFlags Include="$(_DefaultEmccFlags)" />
       <_EmccCommonFlags Include="$(EmccFlags)" />
-      <_EmccCommonFlags Include="-g"                                       Condition="'$(WasmNativeStrip)' == 'false'" />
       <_EmccCommonFlags Include="-v"                                       Condition="'$(EmccVerbose)' != 'false'" />
       <_EmccCommonFlags Include="-s DISABLE_EXCEPTION_CATCHING=0"          Condition="'$(WasmEnableExceptionHandling)' == 'false'" />
       <_EmccCommonFlags Include="-fwasm-exceptions"                        Condition="'$(WasmEnableExceptionHandling)' == 'true'" />