[FE] Change tooltip text for changes requiring attention

[iugaidiana]

In Portal and Agent there are tooltips for "Changes Requiring Attention" and "Operations with Changes Requiring Attention". Currently these tooltips have the following text:
"A changes requiring attention is a change that breaks backward compatibility according to the rules:

• operation was annotated as deprecated in at least two previous consecutive releases and then it was deleted
• operation is marked as no-BWC"

Need to replace this text to the new one: "A change requiring attention is a change that potentially may break backward compatibility with the previous version of API, depending on the particular implementation of a client code. This category also includes breaking changes in operations annotated as no-BWC."

(the pages where such tooltip is displayed can be found in Netcracker/qubership-apihub-ui#45)

[alagishev]

Waiting for @AndreiChek to validate wording

[iugaidiana]

Text of tooltip was changed according to Andrei's suggestion

[iurii-golovinskii]

PR:
Netcracker/qubership-apihub-ui#96
Netcracker/qubership-apihub-ui-tests#34