Bevel Modifier: Use angle limit method by default

This right click select post outlines the reasons to make "Angle" the
default limit method: https://blender.community/c/rightclickselect/BVfbbc/
In short: Beveling every single edge rather than just sharp edges is
rarely the desired behavior, and the placement of the property in the UI
makes it easy to see the property's importance and toggle it.

Differential Revision: https://developer.blender.org/D8961

source/blender/makesdna/DNA_modifier_defaults.h

@@ -56,7 +56,7 @@
     .flags = 0, \
     .val_flags = MOD_BEVEL_AMT_OFFSET, \
     .profile_type = MOD_BEVEL_PROFILE_SUPERELLIPSE, \
-    .lim_flags = 0, \
+    .lim_flags = MOD_BEVEL_ANGLE, \
     .e_flags = 0, \
     .mat = -1, \
     .edge_flags = 0, \