Missing BRAVEREWARDSCREATINGTEXT string on Rewards Panel

[btlechowski]

Steps to Reproduce

1. Clean install
2. Open Rewards Panel
3. Click Join Rewards
4. Observe the Join Rewards Button to be transformed into Waiter message (enabling Rewards from panel should have waiter message when opting in #1502)

Actual result:

Reproduces how often:

always

Brave version (brave://version info)

Brave	0.56.6 Chromium: 70.0.3538.67 (Official Build) beta (64-bit)
Revision	9ab0cfab84ded083718d3a4ff830726efd38869f-refs/branch-heads/3538@{#1002}
OS	Windows 7 x64

Reproducible on current release:

No
There is no waiter message in Rewards Panel on Release build.

@srirambv @GeetaSarvadnya @kjozwiak @LaurenWags @NejcZdovc @ryanml

[NejcZdovc]

we need to generate new translations files

[bbondy]

Transifex was moved to C71 strings and we can't maintain multiple transifex's. So you'll have to work around that in some way @NejcZdovc

[bbondy]

0.56.x must remain on C70.

[NejcZdovc]

ok will just copy en string to all files. wdyt? @bbondy

[srirambv]

Issue doesn't seem to be fixed on all platforms. @kjozwiak reproduced on macOS and Windows:

• Win 10 x64 - Still reproducible
• macOS 10.13.6 x64 - still reproducible
• Linux - still reproducible

[NejcZdovc]

cc @bbondy for help

[bbondy]

Original work should be reverted and put in dev channel.

[LaurenWags]

Verified passed with

Brave	0.56.7 Chromium: 70.0.3538.77 (Official Build) beta(64-bit)
Revision	0f6ce0b0cd63a12cb4eccea3637b1bc9a29148d9-refs/branch-heads/3538@{#1039}
OS	Mac OS X

Verification Passed on

Brave	0.56.7 Chromium: 70.0.3538.77 (Official Build) beta (64-bit)
Revision	0f6ce0b0cd63a12cb4eccea3637b1bc9a29148d9-refs/branch-heads/3538@{#1039}
OS	Windows

Verification Passed on

Brave	0.56.7 Chromium: 70.0.3538.77 (Official Build) beta (64-bit)
Revision	0f6ce0b0cd63a12cb4eccea3637b1bc9a29148d9-refs/branch-heads/3538@{#1039}
OS	Linux