Fix missing MA.promote_operation method with LinearAlgebra.I

[odow]

Part of jump-dev/MutableArithmetics.jl#206

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (3d168da) 98.11% compared to head (b95769f) 98.12%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    jump-dev/JuMP.jl#3295   +/-   ##
=======================================
  Coverage   98.11%   98.12%           
=======================================
  Files          34       34           
  Lines        4732     4736    +4     
=======================================
+ Hits         4643     4647    +4     
  Misses         89       89           

Impacted Files	Coverage Δ
src/mutable_arithmetics.jl	88.78% <100.00%> (+0.43%)	⬆️

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[blegat]

The right fix is to define similar_array_type for Diagonal like
https://github.com/jump-dev/MutableArithmetics.jl/blob/master/src/implementations/LinearAlgebra.jl#L151-L156
https://github.com/jump-dev/MutableArithmetics.jl/blob/master/src/implementations/LinearAlgebra.jl#L158
https://github.com/jump-dev/MutableArithmetics.jl/blob/master/src/implementations/LinearAlgebra.jl#L442-L447

[odow]

Closing in favor of jump-dev/MutableArithmetics.jl#205