Allow referencing output from test run in local variables block (tofu test) (#1254)

Signed-off-by: siddharthasonker95 <158144589+siddharthasonker95@users.noreply.github.com>

internal/command/testdata/test/pass_with_local_variable/main.tf

@@ -0,0 +1,4 @@
+output "foo" {
+  description = "Output"
+  value = "bar"
+}

internal/command/testdata/test/pass_with_local_variable/tests/test.tftest.hcl

@@ -0,0 +1,15 @@
+run "first" {
+  command = apply
+}
+
+run "second" {
+  command = plan
+
+  module {
+    source = "./tests/testmodule"
+  }
+
+  variables {
+    foo = run.first.foo
+  }
+}

internal/command/testdata/test/pass_with_local_variable/tests/testmodule/main.tf

@@ -0,0 +1,3 @@
+variable "foo" {
+  type = string
+}