osd: override user bindings for OSC input

E.g. binding MOUSE_BTN0 always used the user defined binding. While it
is ok that the user can override mouse_move and mouse_leave (for
whatever reasons), we want to strictly override the bindings when input
is sent to the OSC itself.

Regression since 03624a1.

player/lua.c

@@ -750,9 +750,9 @@ static int script_input_define_section(lua_State *L)
     char *contents = (char *)luaL_checkstring(L, 2);
     char *flags = (char *)luaL_optstring(L, 3, "");
     bool builtin = true;
-    if (strcmp(flags, "builtin") == 0) {
+    if (strcmp(flags, "default") == 0) {
         builtin = true;
-    } else if (strcmp(flags, "default") == 0) {
+    } else if (strcmp(flags, "force") == 0) {
         builtin = false;
     } else if (strcmp(flags, "") == 0) {
         //pass

player/lua/defaults.lua

@@ -27,7 +27,7 @@ local default_section = "input_dispatch_" .. mp.script_name
 -- callback can be a string too, in which case the following will be added like
 -- an input.conf line: key .. " " .. callback
 -- (And callback_down is ignored.)
-function mp.set_key_bindings(list, section)
+function mp.set_key_bindings(list, section, flags)
     local cfg = ""
     for i = 1, #list do
         local entry = list[i]
@@ -42,7 +42,7 @@ function mp.set_key_bindings(list, section)
             cfg = cfg .. key .. " " .. cb .. "\n"
         end
     end
-    mp.input_define_section(section or default_section, cfg)
+    mp.input_define_section(section or default_section, cfg, flags)
 end
 
 function mp.enable_key_bindings(section, flags)

player/lua/osc.lua

@@ -1279,5 +1279,5 @@ mp.set_key_bindings({
     {"mouse_btn0_dbl",          "ignore"},
     {"shift+mouse_btn0_dbl",    "ignore"},
     {"mouse_btn2_dbl",          "ignore"},
-}, "input")
+}, "input", "force")
 mp.enable_key_bindings("input")