decompiler: xref jump lands the cursor on the reference token's column

Previously an xref jump only positioned the pseudocode line; the cursor sat at
column 0. Thread the referenced symbol's name (the token xrefs was invoked on,
or the callee's name) from the xref dialog through _on_xref_chosen -> _do_navigate,
and place the column at that token's whole-word start on the target line
(_decomp_col_for, computed on the marker-stripped line so it matches the display).
Works for both cross-function (via _apply_decomp cursor_x) and same-function (via
DecompView.goto) jumps.

Add a column assertion to the xref pilot test (asserts token-start when the token
is on the line, line-start otherwise -- robust to a stale server Hex-Rays cache).

full suite 65/65.

0 files changed, 0 insertions, 0 deletions