mathlib3

5166aaab - feat(analysis/normed_space/linear_isometry): `trans_one`, `one_trans`, `refl_mul`, `mul_refl` (#12016)

feat(analysis/normed_space/linear_isometry): `trans_one`, `one_trans`, `refl_mul`, `mul_refl` (#12016) Add variants of the `linear_isometry_equiv.trans_refl` and `linear_isometry_equiv.refl_trans` `simp` lemmas where `refl` is given as `1`. (`one_def` isn't a `simp` lemma in either direction, since either `refl` or `1` could be the appropriate simplest form depending on the context, but it seems clear these expressions involving `trans` with `1` are still appropriate to simplify.) Also add corresponding `refl_mul` and `mul_refl`.