Refactor ESolver_LR: remove redundant input member, use base class inp_

Problem:
ESolver_LR maintained a redundant 'const Input_para& input;' member
bound in the constructor, while the base class ESolver already provides
'const Input_para* inp_' bound during before_all_runners(). This
duplication existed as a workaround for a bug: in the 'ks-lr' branch of
before_all_runners, inp_ was never assigned (only the temporary
ks_solver.inp_ was set), so ESolver_LR could not rely on inp_ and
instead used its own reference member.

Changes:
1. esolver_lr_lcao_tddft.cpp:
   - Add 'this->inp_ = &inp;' at the beginning of before_all_runners()
     to ensure inp_ is bound in both 'ks-lr' and 'lr' branches.
   - Remove 'input(inp)' from the constructor initializer list.
   - Replace all 'input.xxx' and 'this->input.xxx' with 'this->inp_->xxx'.
   - Remove GlobalC::exx_info from constructor initializer list (already
     removed upstream; init_exx_info handles full initialization from inp).
   - Fix uninitialized 'inp' variable in setup_2center_table() (was 'inp.'
     but the function has no 'inp' parameter; changed to 'input.' and then
     to 'this->inp_->').

2. esolver_lr_lcao_tddft.h:
   - Remove the redundant 'const Input_para& input;' member declaration.

3. esolver_lr_lcao_bse.cpp:
   - Replace all 'this->input.xxx' with 'this->inp_->xxx'.
   - Replace 'GlobalC::exx_info.info_ri' with 'this->exx_info.info_ri'
     (use inherited member instead of removed global).

Verification:
- Built successfully with 'make -j 20' in build_max_para_test/.
- Not committed until now per user request.

Author: abacus_fixer