Set CE length to 0 in LE_Create_Connection

- Currently the value is set to constant min/max which does not make
  sense to the controller in most of the cases.
- Set length to 0 to align with the behavior in legacy stack as well
  as the extended create connection command in gd stack.

Bug: 268702775
Test: cert/run
(cherry picked from https://android-review.googlesource.com/q/commit:29a98dedcb3894c4c5b4e6dab4130f898ad37b2b)
Merged-In: Ie6a0aefb9bc35ddc6e6ab4c0aced6c0e860565b5
Bug: 263323082

Change-Id: I347725be669a8182f0c831a6d81877f4ebf32aaa