#4581 Immediately subsequent DynamicTextSpanners collide at line break

[Simon Albrecht]

If two DynamicTextSpanners immediately follow one another and the second one starts at a line break,
– the first will get repeated at the beginning of the new line, although it doesn’t span any time there
– and the texts will collide:

:::TeX
%%%% 4581.ly %%%%%%%
\version "2.19.25"

\paper { ragged-right = ##t #(set-paper-size "a8") }
\header { tagline = ##f }
#(ly:set-option 'point-and-click #f)

cres = -\tweak bound-details.left.text "cres" \cresc
cen = -\tweak bound-details.left.text "cen" \cresc
do = -\tweak bound-details.left.text "do" \cresc

{
  c'1\cres
  \break
  d'\cen
  \break
  e'\do
  f\f
}
%%%%% output attached %%%%%%%