Triage some precompilation failures, mostly related to the service isolate no longer being started.

tests/standalone/standalone.status

 # Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # WARNING:
 # Tests using the multitest feature where failure is expected should *also* be
 # listed in tests/lib/analyzer/analyze_tests.status without the "standalone"
 # prefix.
 
 package/invalid_uri_test: Fail, OK # CompileTimeErrors intentionally
@@ skipping 212 matching lines @@
 [ $noopt || $compiler == precompiler ]
 map_insert_remove_oom_test: Skip # Heap limit too low. Increasing iteration count to make a higher limit a meaningful test makes it too slow for simarm[64] bots.
 io/web_socket_test: Pass, RuntimeError # Issue 24674
 precompilation_test: Skip # Platform.executable
 precompilation_dart2js_test: Skip  # Platform.executable
 io/test_extension_test: Skip # Platform.executable
 io/test_extension_fail_test: Skip # Platform.executable
 io/platform_test: Skip # Platform.executable
 io/code_collection_test: Skip # Platform.executable
 full_coverage_test: Skip # Platform.executable
+regress_26031_test: Skip # Platform.resolvedExecutable
 
 [ $runtime == dart_precompiled ]
 io/compile_all_test: Crash # Incompatible flag --compile_all
 
 [ $runtime == dart_product ]
 io/stdout_bad_argument_test: Skip # Test exits and so can't generate snapshot.
 
 [ $runtime == dart_precompiled || $runtime == dart_product ]
 debugger/*: Skip
 precompilation_test: Skip # Platform.executable
@@ skipping 44 matching lines @@
 [ $mode == product ]
 no_profiler_test: SkipByDesign
 no_support_coverage_test: SkipByDesign
 no_support_debugger_test: SkipByDesign
 no_support_disassembler_test: SkipByDesign
 no_support_il_printer_test: SkipByDesign
 no_support_service_test: SkipByDesign
 no_support_timeline_test: SkipByDesign
 
 # Following tests are skipped on dart_product as package mapping is not supported.
-[ $runtime == dart_product ]
+[ $runtime == dart_precompiled || $runtime == dart_product ]
 package/scenarios/packages_file_strange_formatting/mixed_line_ends_test: Skip
 package/scenarios/packages_file_strange_formatting/empty_lines_test: Skip
 package/scenarios/invalid/invalid_utf8_test: Skip
 package/scenarios/invalid/same_package_twice_test: Skip
 package/scenarios/invalid/non_existent_packages_file_test: Skip
 package/scenarios/empty_packages_file/empty_packages_file_noimports_test: Skip
 package/scenarios/packages_option_only/packages_option_only_noimports_test: Skip
 package/scenarios/packages_option_only/packages_option_only_test: Skip