Broken R recipes from v2.11.0 due to use of R v4.3.0

[ehogan]

Describe the bug The following R recipes failed in the recent ESMValCore v2.11.0rc1 testing:

• recipe_combined_indices.yml

  Error in (!is.null(d$longname)) && (nchar(d$longname) > 0) : 
  'length = 2' in coercion to 'logical(1)'
  Calls: nc_create -> ncvar_add -> ncdim_create

• recipe_extreme_events.yml

  Error in (!is.character(filename)) || (nchar(filename) < 1) :
  'length = 2' in coercion to 'logical(1)'
  Calls: gleckler_main -> gleckler_array -> nc_open

• recipe_miles_block.yml
• recipe_miles_eof.yml
• recipe_miles_regimes.yml

  Error in (models_dataset == reference_dataset) && (models_exp == reference_exp) :
  'length = 2' in coercion to 'logical(1)'
  Calls: which

According to https://cran.r-project.org/doc/manuals/r-release/NEWS.html, v4.3.0 introduced the following change:

Calling && or || with LHS or (if evaluated) RHS of length greater than one is now always an error, with a report of the form

'length = 4' in coercion to 'logical(1)'

Possible solutions:

• Pin R to use <4.3.0
• Implement the simplest suggestion from https://stackoverflow.com/questions/72848442/r-warning-lengthx-2-1-in-coercion-to-logical1 would result in:

  (all(models_dataset == reference_dataset)) && (all(models_exp == reference_exp))

  However, this wouldn't fix the first and second issues, as I can't find these lines in ESMValTool anywhere, which leads me to believe that they are from an R dependency, likely one of nc* functions.