[clang-format] Fix putting ObjC message arguments in one line for multiline receiver

Summary:
Reapply reverted changes from D46879.

Currently BreakBeforeParameter is set to true everytime message receiver spans multiple lines, e.g.:

[[object block:^{
  return 42;
}] aa:42 bb:42];

will be formatted:

[[object block:^{
  return 42;
}] aa:42
   bb:42];

even though arguments could fit into one line. This change fixes this behavior.

Test Plan:
make -j12 FormatTests && tools/clang/unittests/Format/FormatTests

Reviewers: benhamilton, krasimir

Reviewed By: benhamilton, krasimir

Subscribers: djasper, klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D47195

llvm-svn: 333171