Do not enable Style/Exponential Notation by default

[stomar]

For numbers in scientific notation, at least two different styles are widely used, normalized scientific notation and engineering notation. Enforcing one of those styles by default is IMO too intrusive.

lambda1 = 400e-9
distance = 12.5e-2

rubocop 1.60.2:

Style/ExponentialNotation: Use a mantissa in [1, 10[.

By default, the cop is enabled and enforces normalized scientific notation.
But depending on the field, engineering notation might be more common.
It might even make sense to use neither of those two (e-2 for distances in cm).

Enabling it by default makes it necessary to add yet another configuration setting.

---

Expected behavior

RuboCop should not report this by default, Style/Exponential Notation should be disabled.

Actual behavior

Style/Exponential Notation is enabled by default.

Steps to reproduce the problem

See example above.

RuboCop version

$ [bundle exec] rubocop -V
1.60.2 (using Parser 3.3.0.5, rubocop-ast 1.30.0, running on ruby 3.3.0) [x86_64-linux]

[koic]

Personally inclined to respect writer's intentions, this proposal seems acceptable.

@tdeo You have proposed the Style Guide rule rubocop/ruby-style-guide#811 and its implementation #7851 for this issue. Do you have any thoughts on this matter?

cc @rubocop/rubocop-core

[tdeo]

While I don't have a strong personal attachment to the rule, I do believe consistency is king when it comes to using that notation to help the reader.

Given the very low amount of times this has been discussed over nearly 4 years, I do believe the current configuration is reasonable enough even though it won't please 100% of people