Annotation stackoverflows when having empty strings

[hz-xiaxz]

• what version of Makie are you running? (]st -m Makie)
  0.24.9
• can you reproduce the bug with a fresh environment ? (]activate --temp; add Makie)
  yes
• What platform + GPU are you on?
  WSL(Ubuntu 24.04) and Windows
• Which backend are you using? (GLMakie, CairoMakie, WGLMakie, RPRMakie)
  Cairo Makie
• Please provide an minimal example of the failing code. If the problem is with the visualization, please provide a picture or video of it.

using CairoMakie   # or GLMakie

# 1. Minimal dummy data
x = [1.0, 2.0, 3.0]
y = [1.0, 2.0, 3.0]

# 2. Labels containing LaTeXStrings (including an empty string, matching the original case)
labels = [L"$H^+$", "", L"$O_2^+$"]

# 3. Setup figure
fig, ax, plt = scatter(x, y)

# 4. Trigger the bug using `annotation!`
# This will cause a StackOverflowError due to infinite recursive updates
# in ComputePipeline.jl / calculate_best_offsets!
annotation!(ax, x, y, text=labels)

# Attempt to display (will likely crash before rendering)
display(fig)

[hz-xiaxz]

I guess an easy fix is to avoid calling notify! when only the text offset is changed.