Fix issue #829 "Compiler crashes when declaring maps with procedure"

Inits `o->value` in `check_expr_base_internal()` so doesn't accidentally
  use last (the proc lit was being set to that of previous string)
Adds test to "tests/issues" and changes CI to use new "run" shells

.github/workflows/ci.yml

@@ -39,7 +39,7 @@ jobs:
           make
         timeout-minutes: 10
       - name: Odin issues tests
-        run: ./odin run tests/issues -collection:tests=tests
+        run: tests/issues/run.sh
         timeout-minutes: 10
       - name: Odin check examples/all for Linux i386
         run: ./odin check examples/all -vet -strict-style -target:linux_i386
@@ -91,7 +91,7 @@ jobs:
           make
         timeout-minutes: 10
       - name: Odin issues tests
-        run: ./odin run tests/issues -collection:tests=tests
+        run: tests/issues/run.sh
         timeout-minutes: 10
       - name: Odin check examples/all for Darwin arm64
         run: ./odin check examples/all -vet -strict-style -target:darwin_arm64
@@ -163,7 +163,7 @@ jobs:
         shell: cmd
         run: |
           call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat
-          odin run tests\issues -collection:tests=tests
+          call tests\issues\run.bat
         timeout-minutes: 10
       - name: Odin check examples/all for Windows 32bits
         shell: cmd