reset the context at init

i think some values were baked into the precompile image and breaking things, maybe, dunno...

Author: Christopher Doris

src/C/context.jl

@@ -31,6 +31,22 @@ end
 
 function init_context()
 
+    # reset the context
+    CTX.is_embedded = false
+    CTX.is_initialized = false
+    CTX.is_preinitialized = false
+    CTX.lib_ptr = C_NULL
+    CTX.exe_path = missing
+    CTX.lib_path = missing
+    CTX.dlopen_flags = RTLD_LAZY | RTLD_DEEPBIND | RTLD_GLOBAL
+    CTX.pyprogname = missing
+    CTX.pyprogname_w = missing
+    CTX.pyhome = missing
+    CTX.pyhome_w = missing
+    CTX.which = :unknown
+    CTX.version = missing
+
+    # check if Julia is embedded into pyjuliacall
     CTX.is_embedded = hasproperty(Base.Main, :__PythonCall_libptr)
 
     if CTX.is_embedded